Jeep Grand Cherokee WJ - Diagnostic Trouble Codes

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Diagnostic Trouble Codes

OBD Systems

MIL

Retrieving/Erasing codes

OBDII Links

Trouble Codes List

OBD (On-Board Diagnostic) systems

Location and pinouts for the Diagnostics Connector

OBD systems are found in most vehicles in use today. OBD is an electronic system designed to control engine functions and diagnose engine problems or component failures, as well as minimize emissions. OBD-II, a new standard introduced in cars built after January 1, 1996, provides almost complete engine control and also monitors parts of the chassis, body and accessory components, as well as the diagnostic control network of the vehicle.

OBD-II equipped vehicles have a connector located in the passenger compartment, usually accessible from the driver's seat (under the dash above the hood release lever in the Grand Cherokee WJ). A cable is plugged into the OBD-II connector and connected to a scanning tool. This can range from a simple hand-held meter that provides a coded read-out of the various diagnostic functions, up to a large console computer-based unit costing thousands of dollars.

Fault codes usually appear after the "Check Engine" light has come on. The data provided by the OBD-II system can sometimes pinpoint the specific component that has malfunctioned, saving substantial service time and cost. Scanning OBD-II signals can also provide important information when purchasing a used vehicle. Recent introductions of less costly scanning devices have allowed home mechanics and small shops accessibility to OBD-II signals to use them for their own testing and repairs.

Malfunction Indicator Lamp (MIL)

In the Grand Cherokee WJ, the MIL gives an indication to the vehicle operator when the Powertrain Control Module (PCM) has recorded a Diagnostic Trouble Code (DTC) for an On-Board Diagnostics II (OBDII) emissions-related circuit or component malfunction. The MIL is controlled by a transistor on the instrument cluster circuit board based upon cluster programming and electronic messages received by the cluster from the PCM over the Programmable Communications Interface (PCI) data bus.

The MIL bulb is completely controlled by the instrument cluster logic circuit, and that logic will only allow this indicator to operate when the instrument cluster receives a battery current input on the fused ignition switch output (run-start) circuit. Therefore, the bulb will always be off when the ignition switch is in any position except On or Start. The bulb only illuminates when it is provided a path to ground by the instrument cluster transistor.

The instrument cluster will turn on the MIL for the following reasons:

BULB TEST - Each time the ignition switch is turned to the On position the MIL is illuminated for about three seconds as a bulb test.

MIL LAMP-ON MESSAGE - Each time the cluster receives a MIL lamp-on message from the PCM, the indicator will be illuminated. The indicator can be flashed on and off, or illuminated solid, as dictated by the PCM message. For some DTC’s, if a problem does not recur, the PCM will send a lamp-off message automatically. Other DTC’s may require that a fault be repaired and the PCM be reset before a lamp-off message will be sent.

COMMUNICATIONS ERROR - If the cluster receives no lamp-on or lamp-off messages from the PCM for twenty consecutive seconds, the MIL is illuminated by the instrument cluster. The indicator remains controlled and illuminated by the cluster until a valid lamp-on or lamp-off message is received from the PCM.

MIL illumination

In many instances, emissions systems must fail diagnostic tests more than once before the PCM illuminates the MIL. These tests are know as 'two trip monitors.' Other tests that turn the MIL lamp on after a single failure are known as 'one trip monitors.' A trip is defined as 'start the vehicle and operate it to meet the criteria necessary to run the given monitor.'

Certain conditions such as a loose or missing gas cap, poor fuel quality, etc. may illuminate the light after engine start. The vehicle should be serviced if the light stays on through several typical driving cycles. In most situations, the vehicle will drive normally and will not require towing.

Prolonged driving with the "Malfunction Indicator Light" or "Check Engine" light on could cause further damage to the emission control system. It could also affect fuel economy and driveability. The vehicle must be repaired before any emissions test can be performed.

If the light is flashing, severe catalytic converter damage and power loss will soon occur. Immediate service is required.

Retrieving codes:

Turn the ignition key until the digital odometer displays, repeat three times in succession and then back to "On" (On/Off, On/Off, On/Off, On). At the fourth "On" the odometer will be replaced with codes. If no codes are present then "Done" will appear.

Erasing codes:

After three good trips the MIL is extinguished and the Task Manager automatically switches the trip counter to a warm-up cycle counter. DTCs are automatically erased following 40 warm-up cycles if the component does not fail again.

DTCs can be erased anytime with a DRB III. Erasing the DTC with the DRB III erases all OBD II information. The DRB III automatically displays a warning that erasing the DTC will also erase all OBD II monitor data. This includes all counter information for warm-up cycles, trips and Freeze Frame.

OBD-II related links:

OBD-II Trouble Codes repair site

Facts About On-Board Diagnostic II Systems

The workings of OBD-II and its effect on modifications

OBD Scan Tools - Automotive Diagnostics

Chrysler Diagnostic Trouble Codes

A Diagnostic Trouble Code (DTC) indicates that the Powertrain Control Module (PCM) has recognized an abnormal condition in the system. DTC's are the results of a system or circuit failure, but do not directly identify the failed component or components.

0010-0099	0100-0199	0200-0299	0300-0399	0400-0499	0500-0599
0600-0699	0700-0799	0800-0899	1100-1199	1200-1299	1300-1399
1400-1499	1500-1599	1600-1699	1700-1799	1800-1899	2000-2599

Code example	1st Digit	2nd Digit	3rd Digit
P 0 1 0 0 1 2 3 4 5	P = powertrain	0 = Standard 1 = Manufacturer specific 2 = ?	1 = Emission management 2 = Injector circuit 3 = Ignition 4 = Auxiliary emission 5 = Vehicle speed & idle control 6 = Computer & output circuit 7 = Transmission 8 = ? 9 = ?

(M) Check Engine Lamp (MIL) will illuminate during engine operation if this Diagnostic Trouble Code was recorded (depending if required by CARB and/or EPA). MIL is displayed as an engine icon on the instrument cluster.

(G) Generator Lamp Illuminated
Chrysler uses ISO 9142-2 OBDII Communications Protocol

Scan Code

DRB Scan Tool Display

Description of Diagnostic Trouble Code

P0010

A Camshaft Position Actuator Circuit (Bank 1)

P0011

A Camshaft Position - Timing Over-Advanced or System Performance (Bank 1))

P0012

A Camshaft Position - Timing Over-Retarded (Bank 1)

P0013

B Camshaft Position - Actuator Circuit (Bank 1)

P0014

B Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)

P0015

B Camshaft Position - Timing Over-Retarded (Bank 1)

P0016

Crankshaft/Camshaft Timing Misalignment

A rationality error has been detected for camshaft position out of phase with crankshaft.

P0020

A Camshaft Position Actuator Circuit (Bank 2)

P0021

A Camshaft Position - Timing Over-Advanced or System Performance (Bank 2)

P0022

A Camshaft Position - Timing Over-Retarded (Bank 2)

P0023

B Camshaft Position - Actuator Circuit (Bank 2)

P0024

B Camshaft Position - Timing Over-Advanced or System Performance (Bank 2)

P0025

B Camshaft Position - Timing Over-Retarded (Bank 2)

P0030

02 Sensor Heater Control Circuit (Bank 1 Sensor 1)

Shorted condition detected in the oxygen sensor heater element control feedback sense circuit.

P0031

02 Sensor Heater Control Circuit Low (Bank 1 Sensor 1)

Shorted low condition detected in the oxygen sensor 1/1 heater elementcontrol feedback sense circuit

P0032

02 Sensor Heater Control Circuit High (Bank 1 Sensor 1)

Shorted high condition detected in the oxygen sensor 1/1 heater element control feedback sense circuit

P0033

Turbo Charger Bypass Valve Control Circuit

P0034

Turbo Charger Bypass Valve Control Circuit Low

P0035

Turbo Charger Bypass Valve Control Circuit High

P0036

02 Sensor Heater Control Circuit (Bank 1 Sensor 2)

Shorted condition detected in the oxygen sensor heater element control feedback sense circuit.

P0037

02 Sensor Heater Control Circuit Low (Bank 1 Sensor 2)

Shorted condition detected in the oxygen sensor heater element control feedback sense circuit.

P0038

02 Sensor Heater Control Circuit High (Bank 1 Sensor 2)

Shorted condition detected in the oxygen sensor heater element control feedback sense circuit.

P0042

02 Sensor Heater Control Circuit (Bank 1 Sensor 3)

Shorted condition detected in the oxygen sensor heater element control feedback sense circuit.

P0043

02 Sensor Heater Control Circuit Low (Bank 1 Sensor 3)

Shorted condition detected in the oxygen sensor heater element control feedback sense circuit.

P0044

02 Sensor Heater Control Circuit High (Bank 1 Sensor 3)

Shorted condition detected in the oxygen sensor heater element control feedback sense circuit.

P0050

02 Sensor Heater Control Circuit (Bank 2 Sensor 1)

Shorted condition detected in the oxygen sensor heater element control feedback sense circuit.

P0051

02 Sensor Heater Control Circuit Low (Bank 2 Sensor 1)

Shorted condition detected in the oxygen sensor heater element control feedback sense circuit.

P0052

02 Sensor Heater Control Circuit High (Bank 2 Sensor 1)

Shorted condition detected in the oxygen sensor heater element control feedback sense circuit.

P0056

02 Sensor Heater Control Circuit (Bank 2 Sensor 2)

Shorted condition detected in the oxygen sensor heater element control feedback sense circuit.

P0057

02 Sensor Heater Control Circuit Low (Bank 2 Sensor 2)

Shorted condition detected in the oxygen sensor heater element control feedback sense circuit.

P0058

02 Sensor Heater Control Circuit High (Bank 2 Sensor 2)

Shorted condition detected in the oxygen sensor heater element control feedback sense circuit.

P0062

02 Sensor Heater Control Circuit High (Bank 2 Sensor 2)

Shorted condition detected in the oxygen sensor heater element control feedback sense circuit.

P0063

HO2S Heater Control Circuit Low (Bank 2 Sensor 3)

Shorted condition detected in the oxygen sensor heater element control feedback sense circuit.

P0064

HO2S Heater Control Circuit High (Bank 2 Sensor 3)

Shorted condition detected in the oxygen sensor heater element control feedback sense circuit.

P0065

Air Assisted Injector Control Range/Performance

P0066

Air Assisted Injector Control Circuit or Circuit Low

P0067

Air Assisted Injector Control Circuit High

P0068

Manifold Pressure/Throttle Position

Correlation MAP sensor signal does not correlate to throttle position sensor signal. Possible vacuum leak.

P0070

Ambient Temp Sensor Stuck

A rationality error has been detected in the ambient temperature sensor test.

P0071 (M)

Ambient Temp Sensor Performance

Ambient change less than 3° C in 200 miles.

P0072

Ambient Temp Sensor Low Input

Ambient temperature sensor input below the minimum acceptable voltage.

P0073

Ambient Temp Sensor High Input

Ambient temperature sensor input above the maximum acceptable voltage.

P0074

Ambient Air Temperature Sensor Circuit Intermittent

P0075

Intake Valve Control Solenoid Circuit (Bank 1)

P0076

Intake Valve Control Solenoid Circuit Low (Bank 1)

P0077

Intake Valve Control Solenoid Circuit High (Bank 1)

P0078

Exhaust Valve Control Solenoid Circuit (Bank 1)

P0079

Exhaust Valve Control Solenoid Circuit Low (Bank 1)

P0080

Exhaust Valve Control Solenoid Circuit High (Bank 1)

P0081

Intake valve Control Solenoid Circuit (Bank 2)

P0082

Intake Valve Control Solenoid Circuit Low (Bank 2)

P0083

Intake Valve Control Solenoid Circuit High (Bank 2)

P0084

Exhaust Valve Control Solenoid Circuit (Bank 2)

P0085

Exhaust Valve Control Solenoid Circuit Low (Bank 2)

P0086

Exhaust Valve Control Solenoid Circuit High (Bank 2)

Scan Code	DRB Scan Tool Display	Description of Diagnostic Trouble Code
P0100	Mass or Volume Air Flow Circuit
P0101	Mass or Volume Air Flow Circuit Range/Performance Problem
P0102	Mass or Volume Air Flow Circuit Low Input
P0103	Mass or Volume Air Flow Circuit High Input
P0104	Mass or Volume Air Flow Circuit Intermittent
P0105	Manifold Absolute Pressure/Barometric Pressure Circuit
P0106 (M)	Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem	MAP sensor input voltage out of an acceptable range detected during reading of barometric pressure at key-on.
P0107 (M)	Manifold Absolute Pressure/Barometric Pressure Circuit Low Input	MAP sensor input below minimum acceptable voltage.
P0108 (M)	Manifold Absolute Pressure/Barometric Pressure Circuit High Input	MAP sensor input above maximum acceptable voltage.
P0109	Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent
P0110	Intake Air Temp Sensor Stuck	A rationality error has been detected for the intake air temperature sensor.
P0111 (M)	Intake Air Temperature Circuit Range/Performance Problem	Air change less than 3° C in 200 miles.
P0112 (M)	Intake Air Temperature Circuit Low Input	Intake air (charge) temperature sensor input below the minimum acceptable voltage.
P0113 (M)	Intake Air Temperature Circuit High Input	Intake air (charge) temperature sensor input above the maximum acceptable voltage.
P0114	Intake Air Temperature Circuit Intermittent
P0115	Engine Coolant Temperature Circuit
P0116	Engine Coolant Temperature Circuit Range/Performance Problem	A rationality error has been detected in the coolant temperature sensor.
P0117 (M)	Engine Coolant Temperature Circuit Low Input	Engine coolant temperature sensor input below the minimum acceptable voltage.
P0118 (M)	Engine Coolant Temperature Circuit High Input	Engine coolant temperature sensor input above the maximum acceptable voltage.
P0119	Engine Coolant Temperature Circuit Intermittent	Engine coolant temperature sensor input above the maximum acceptable voltage.
P0120	Throttle/Pedal Position Sensor/Switch A Circuit	Engine coolant temperature sensor input above the maximum acceptable voltage.
P0121 (M)	Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance Problem	TPS signal does not correlate to MAP sensor signal.
P0121 (M)	Accelerator Position Sensor (APPS)	APPS voltage input below the minimum acceptable voltage.
P0122 (M)	Throttle/Pedal Position Sensor/Switch A Circuit Low Input	Throttle position sensor input below the acceptable voltage range.
P0122 (M)	Accelerator Position Sensor (APPS) Signal Voltage Too Low	APPS voltage input below the minimum acceptable voltage.
P0123 (M)	Throttle/Pedal Position Sensor/Switch A Circuit Intermittent	Throttle position sensor input above the maximum acceptable voltage. Follow all appropriate diagnostics for the fault that is present. Prior to replacing parts, check all connectors between the speed control switch and the PCM for moisture Internally the PCM uses the same A/D (analog to digital) converter for TPS voltage as it does for the speed control switch sense. If the v-37 circuit has voltage bleed over from another source, a code of TPS Shorted to voltage may be set in the PCM. The DN model equipped with rear heat option, has an external water pump to circulate coolant to the rear heater. If you find coolant in the bulkhead connector, the likely cause would be a leaking coolant pump. Pump should be replaced if found leaking. If the code sets when the A/C is turned on go right to the bulk head connector and check for moisture. Check for a shorted clock spring causing the speed control 5 volt feed to be shorted to power.
P0123 (M)	Accelerator Position Sensor (APPS) Signal Voltage Too High	APPS voltage input above the maximum acceptable voltage.
P0125 (M)	Insufficient Coolant Temperature for Closed Loop Fuel Control	Time to enter Closed Loop Operation (Fuel Control) is excessive.
P0125 (M)	Engine is Cold Too Long	Engine does not reach operating temperature.
P0126	Insufficient Coolant Temperature for Stable Operation
P0127	Intake Air Temperature Too High
P0128	Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)	A rationality error has been detected for the thermostat.
P0129	Barometic Pressure Out-of-Range low	MAP sensor input voltage out of an acceptable range detected during reading of barometric pressure.
P0130	O2 Sensor Circuit (Bank 1 Sensor 1)	An open or shorted condition detected in the ASD or CNG shutoff relay control ckt.
P0131 (M)	O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1)	Oxygen sensor input voltage maintained below normal operating range.
P0132 (M)	O2 Sensor Circuit High Voltage (Bank 1 Sensor 1)	Oxygen sensor input voltage maintained above normal operating range.
P0133 (M)	O2 Sensor Circuit Slow Response (Bank 1 Sensor 1)	Oxygen sensor response slower than minimum required switching frequency.
P0134 (M)	O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1)	Neither rich or lean condition is detected from the oxygen sensor input.
P0135 (M)	O2 Sensor Heater Circuit (Bank 1 Sensor 1)	Oxygen sensor heater element malfunction.
P0136	O2 Sensor Circuit Malfunction (Bank 1 Sensor 2)	An open or shorted condition detected in the ASD or CNG shutoff relay control ckt.
P0137 (M)	O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2)	Oxygen sensor input voltage maintained below normal operating range.
P0138 (M)	O2 Sensor Circuit High Voltage (Bank 1 Sensor 2)	Oxygen sensor input voltage maintained above normal operating range.
P0139 (M)	OS Sensor Circuit Slow Response (Bank 1 Sensor 2)	Oxygen sensor response not as expected.
P0140 (M)	O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)	Neither rich or lean condition is detected from the oxygen sensor.
P0141 (M)	O2 Sensor Heater Circuit (Bank 1 Sensor 2)	Oxygen sensor heater element malfunction. O2 sensor voltage greater than 3 volts for 60 to 240 seconds.
P0142 (M)	Sensor Circuit Malfunction (Bank 1 Sensor 3)	Oxygen sensor heater element malfunction.
P0143	O2 Sensor Circuit Low Voltage (Bank 1 Sensor 3)	Oxygen sensor input voltage maintained below normal operating range.
P0144	O2 Sensor Circuit High Voltage (Bank 1 Sensor 3)	Oxygen sensor input voltage maintained above normal operating range.
P0145	O2 Sensor Circuit Slow Response (Bank 1 Sensor 3)	Oxygen sensor response slower than minimum required switching frequency.
P0146	O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 3)	Neither rich or lean condition is detected from the oxygen sensor.
P0147	O2 Sensor Heater Circuit (Bank 1 Sensor 3)	Oxygen sensor heater element malfunction.
P0148	Fuel Delivery Error
P0149	Fuel Timing Error
P0150	O2 Sensor Circuit (Bank 2 Sensor 1)
P0151 (M)	O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)	Oxygen sensor input voltage maintained below normal operating range.
P0152 (M)	O2 Sensor Circuit High Voltage (Bank 2 Sensor 1)	Oxygen sensor input voltage sustained above normal operating range.
P0153 (M)	O2 Sensor Circuit Slow Response (Bank 2 Sensor 1)	Oxygen sensor response slower than minimum required switching frequency.
P0154 (M)	O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1)	Neither rich or lean condition is detected from the oxygen sensor.
P0155 (M)	O2 Sensor Heater Circuit (Bank 2 Sensor 1)	Oxygen sensor heater element malfunction.
P0156 (M)	O2 Sensor Circuit Malfunction (Bank 2 Sensor2)	Oxygen sensor heater element malfunction.
P0157 (M)	O2 Sensor Circuit Low Voltage (Bank 2 Sensor 2)	Oxygen sensor input voltage maintained below normal operating range.
P0158 (M)	O2 Sensor Circuit High Voltage (Bank 2 Sensor 2)	Oxygen sensor input voltage maintained above normal operating range.
P0159	O2 Sensor Circuit Slow Response (Bank 2 Sensor 2)	Oxygen sensor response slower than minimum required switching frequency.
P0160 (M)	O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)	Neither rich or lean condition is detected from the oxygen sensor.
P0161 (M)	O2 Sensor Heater Circuit (Bank 2 Sensor 2)	Oxygen sensor heater element malfunction. O2 sensor voltage greater than 3 volts for 60 to 240 seconds.
P0162 (M)	O2 Sensor Circuit Malfunction (Bank 2 Sensor 3)	Oxygen sensor heater element malfunction.
P0163 (M)	O2 Sensor Circuit Low Voltage (Bank 2 Sensor 3)
P0164 (M)	O2 Sensor Circuit High Voltage (Bank 2 Sensor3)
P0165	O2 Sensor Circuit Slow Response (Bank 2 Sensor 3)
P0166	O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 3)
P0167	OS Sensor Heater Circuit (Bank 2 Sensor 3)
P0168	Fuel Temperature Too High
P0169	Incorrect Fuel Composition
P0170	Fuel Trim (Bank 1)
P0171 (M)	System too Lean (Bank 1)	A lean air/fuel mixture has been indicated by an abnormally rich correction factor.
P0172 (M)	System too Rich (Bank 1)	A rich air/fuel mixture has been indicated by an abnormally lean correction factor. Was the fuel pressure checked with a DRBIII pressure transducer? Is the fuel pressure within specification with engine running at normal operating temperature? Verify the correct DRBIII PEP module pressure transducer is being used It is critical when reading pressures with the DRBIII PEP module pressure transducers that the proper transducer is being used. A too high of value transducer will cause inaccurate readings. It is also critical that the DRBIII and pressure transducer is zeroed out before taking a reading.Repair or replace any fuel system malfunctioning components.
P0173 (M)	Fuel Trim Malfunction (Bank 2)
P0174 (M)	System too Lean (Bank 2)	A lean air/fuel mixture has been indicated by an abnormally rich correction factor.
P0175 (M)	System too Rich (Bank 2)	A rich air/fuel mixture has been indicated by an abnormally lean correction factor.
P0176	Fuel Composition Sensor Circuit	No calibration voltage present from flex fuel sensor.
P0177	Fuel Composition Sensor Circuit Range/Performance
P0178	Fuel Composition Sensor Circuit Low Input	Flex fuel sensor input below minimum acceptable voltage.
P0178	Water in Fuel Light—Water In Fuel Sensor Voltage Too Low	Loss of water-in-fuel circuit or sensor.
P0179	Fuel Composition Sensor Circuit High Input	Flex fuel sensor input above maximum acceptable voltage.
P0180	Fuel Temperature Sensor A Circuit
P0181	Fuel Temperature Sensor A Circuit Range/Performance
P0182 (M)	Fuel Temperature Sensor A Circuit Low Input	Compressed natural gas temperature sensor voltage below acceptable voltage
P0183 (M)	Fuel Temperature Sensor A Circuit High Input	Compressed natural gas temperature sensor voltage above acceptable voltage
P0184	Fuel Temperature Sensor A Circuit Intermittent
P0185	Fuel Temperature Sensor B Circuit
P0186	Fuel Temperature Sensor B Circuit Range/Performance
P0187	Fuel Temperature Sensor B Circuit Low Input
P0188	Fuel Temperature Sensor B Circuit High Input
P0189	Fuel Temperature Sensor B Circuit Intermittent
P0190	Fuel Rail Pressure Sensor Circuit
P0191	Fuel Rail Pressure Sensor Circuit Range/Performance
P0192	Fuel Rail Pressure Sensor Circuit Low Input
P0193	Fuel Rail Pressure Sensor Circuit High Input
P0194	Fuel Rail Pressure Sensor Circuit Intermittent
P0195	Engine Oil Temperature Sensor
P0196	Engine Oil Temperature Sensor Range/Performance
P0197	Engine Oil Temperature Sensor Low
P0198	Engine Oil Temperature Sensor High
P0199	Engine Oil Temperature Sensor Intermittent

Scan Code	DRB Scan Tool Display	Description of Diagnostic Trouble Code
P0200	Injector Circuit
P0201 (M)	Injector # 1 Control Circuit	An open or shorted condition detected in control circuit for Injector # 1 or the INJ 1 injector bank.
P0202 (M)	Injector # 2 Control Circuit	An open or shorted condition detected in control circuit for Injector # 2 or the INJ 2 injector bank.
P0203 (M)	Injector # 3 Control Circuit	An open or shorted condition detected in control circuit for Injector # 3 or the INJ 3 injector bank.
P0204 (M)	Injector # 4 Control Circuit	Injector # 4 or INJ 4 injector bank output driver stage does not respond properly to the control signal.
P0205 (M)	Injector # 5 Control Circuit	Injector # 5 output driver stage does not respond properly to the control signal.
P0206 (M)	Injector # 6 Control Circuit	Injector # 6 output driver stage does not respond properly to the control signal.
P0207 (M)	Injector # 7 Control Circuit	Injector # 7 output driver stage does not respond properly to the control signal.
P0208 (M)	Injector # 8 Control Circuit	Injector # 8 output driver stage does not respond properly to the control signal.
P0209 (M)	Injector # 9 Control Circuit	Injector # 9 output driver stage does not respond properly to the control signal.
P0210 (M)	Injector # 10 Control Circuit	Injector # 10 output driver stage does not respond properly to the control signal.
P0211	Injector Circuit - Cylinder 11
P0212	Injector Circuit - Cylinder 12
P0213	Cold Start Injector 1
P0214	Cold Start Injector 2
P0215	Engine Shutoff Solenoid
P0216 (M)	Injector/Injection Timing Control Circuit
P0217	Engine Coolant Over Temperature Condition
P0218	Transmission Fluid Over Temperature Condition
P0219	Engine Overspeed Condition
P0220	Throttle/Pedal Position Sensor/Switch B Circuit
P0221	Throttle/Pedal Position Sensor/Switch B Circuit Range/Performance Problem
P0222 (M)	Throttle/Pedal Position Sensor/Switch B Circuit Low Input
P0223 (M)	Throttle/Pedal Position Sensor/Switch B Circuit High Input
P0224	Throttle/Pedal Position Sensor/Switch B Circuit Intermittent
P0225	Throttle/Pedal Position Sensor/Switch C Circuit
P0226	Throttle/Pedal Position Sensor/Switch C Circuit Range/Performance Problem
P0227	Throttle/Pedal Position Sensor/Switch C Circuit Low Input
P0228	Throttle/Pedal Position Sensor/Switch C Circuit High Input
P0229	Throttle/Pedal Position Sensor/Switch C Circuit Intermittent
P0230	Fuel Pump Primary Circuit
P0231	Fuel Pump Secondary Circuit Low
P0232	Fuel Pump Secondary Circuit High
P0233	Fuel Pump Secondary Circuit Intermittent
P0234	Turbo/Super Charger Overboost Condition	Manifold pressure reading above turbocharger over-boost limit detected during engine operation
P0235	Turbo/Super Charger Boost Sensor A Circuit
P0236 (M)	Turbo/Super Charger Boost Sensor A Circuit Range/Performance
P0237 (M)	Turbo/Super Charger Boost Sensor A Circuit Low
P0238 (M)	Turbo/Super Charger Boost Sensor A Circuit High
P0239	Turbo/Super Charger Boost Sensor B Circuit
P0240	Turbo/Super Charger Boost Sensor B Circuit Range/Performance
P0241	Turbo/Super Charger Boost Sensor B Circuit Low
P0242	Turbo/Super Charger Boost Sensor B Circuit High
P0243	Turbo/Super Charger Wastegate Solenoid A	Open or shorted condition detected in the turbocharger wastegate solenoid control circuit.
P0244	Turbo/Super Charger Wastegate Solenoid A Range/Performance
P0245	Turbo/Super Charger Wastegate Solenoid A Low
P0246	Turbo/Super Charger Wastegate Solenoid A High
P0247	Turbo/Super Charger Wastegate Solenoid B
P0248	Turbo/Super Charger Wastegate Solenoid B Range/Performance
P0249	Turbo/Super Charger Wastegate Solenoid B Low
P0250	Turbo/Super Charger Wastegate Solenoid B High
P0251 (M)	Injection Pump Fuel Metering Control A (Cam/Rotor/Injector)
P0252 (M)	Injection Pump Fuel Metering Control A Range/Performance (Cam/Rotor/Injector)
P0253 (M)	Injection Pump Fuel Metering Control A Low (Cam/Rotor/Injector)
P0254	Injection Pump Fuel Metering Control A High (Cam/Rotor/Injector)
P0255	Injection Pump Fuel Metering Control A Intermittent (Cam/Rotor/Injector)
P0256	Injection Pump Fuel Metering Control B (Cam/Rotor/Injector)
P0257	Injection Pump Fuel Metering Control B Range/Performance (Cam/Rotor/Injector)
P0258	Injection Pump Fuel Metering Control B Low (Cam/Rotor/Injector)
P0259	Injection Pump Fuel Metering Control B High (Cam/Rotor/Injector)
P0260	Injection Pump Fuel Metering Control B Intermittent (Cam/Rotor/Injector)
P0261	Cylinder 1 Injector Circuit Low
P0262	Cylinder 1 Injector Circuit High
P0263	Cylinder 1 Contribution/Balance
P0264	Cylinder 2 Injector Circuit Low
P0265	Cylinder 2 Injector Circuit High
P0266	Cylinder 2 Contribution/Balance
P0267	Cylinder 3 Injector Circuit Low
P0268	Cylinder 3 Injector Circuit High
P0269	Cylinder 3 Contribution/Balance
P0270	Cylinder 4 Injector Circuit Low
P0271	Cylinder 4 Injector Circuit High
P0272	Cylinder 4 Contribution/Balance
P0273	Cylinder 5 Injector Circuit Low
P0274	Cylinder 5 Injector Circuit High
P0275	Cylinder 5 Contribution/Balance
P0276	Cylinder 6 Injector Circuit Low
P0277	Cylinder 6 Injector Circuit High
P0278	Cylinder 6 Contribution/Balance
P0279	Cylinder 7 Injector Circuit Low
P0280	Cylinder 7 Injector Circuit High
P0281	Cylinder 7 Contribution/Balance
P0282	Cylinder 8 Injector Circuit Low
P0283	Cylinder 8 Injector Circuit High
P0284	Cylinder 8 Contribution/Balance
P0285	Cylinder 9 Injector Circuit Low
P0286	Cylinder 9 Injector Circuit High
P0287	Cylinder 9 Contribution/Balance
P0288	Cylinder 10 Injector Circuit Low
P0289	Cylinder 10 Injector Circuit High
P0290	Cylinder 10 Contribution/Balance
P0291	Cylinder 11 Injector Circuit Low
P0292	Cylinder 11 Injector Circuit High
P0293	Cylinder 11 Contribution/Balance
P0294	Cylinder 12 Injector Circuit Low
P0295	Cylinder 12 Injector Circuit High
P0296	Cylinder 12 Contribution/Balance
P0298	Engine Oil Over Temperature

Scan Code	DRB Scan Tool Display	Description of Diagnostic Trouble Code
P0300 (M)	Random/Multiple Cylinder Misfire Detected	Misfire detected in multiple Cylinders.
P0301 (M)	Cylinder # 1 Misfire	Misfire detected in Cylinder # 1.
P0302 (M)	Cylinder # 2 Misfire	Misfire detected in Cylinder # 2.
P0303 (M)	Cylinder # 3 Misfire	Misfire detected in Cylinder # 3.
P0304 (M)	Cylinder # 4 Misfire	Misfire detected in Cylinder # 4.
P0305 (M)	Cylinder # 5 Misfire	Misfire detected in Cylinder # 5.
P0306 (M)	Cylinder # 6 Misfire	Misfire detected in Cylinder # 6.
P0307 (M)	Cylinder # 7 Misfire	Misfire detected in Cylinder # 7
P0308 (M)	Cylinder # 8 Misfire	Misfire detected in Cylinder # 8.
P0309 (M)	Cylinder # 9 Misfire	Misfire detected in Cylinder # 9.
P0310 (M)	Cylinder # 10 Misfire	Misfire detected in Cylinder # 10.
P0311 (M)	Cylinder # 10 Misfire	Misfire detected in Cylinder # 11.
P0311 (M)	Cylinder # 12 Misfire	Misfire detected in Cylinder # 12.
P0313 (M)	Misfire Detected with Low Fuel
P0314 (M)	Single Cylinder Misfire (Cylinder not Specified)
P0315	No Crank Sensor Learned	Unable to learn the crank sensor signal in preparation for Misfire diagnostics.
P0320	No Crank Reference Signal at PCM	No reference signal (crankshaft position sensor) detected during engine cranking.
P0320 (M)	No RPM Signal to PCM (Crankshaft Position Sensor Signal to JTEC)	A CKP signal has not been detected at the PCM.
P0321	Ignition/Distributor Engine Speed Input Circuit Range/Performance
P0322	Ignition/Distributor Engine Speed Input Circuit No Signal
P0323	Ignition/Distributor Engine Speed Input Circuit Intermittent
P0324	Knock Control System Error
P0325	Knock Sensor 1 Circuit (Bank 1 or Single Sensor)	Knock sensor (# 1) signal above or below minimum acceptable threshold voltage at particular engine speeds.
P0326	Knock Sensor 1 Circuit Range/Performance (Bank 1 or Single Sensor)
P0327	Knock Sensor 1 Circuit Low Input (Bank 1 or Single Sensor)
P0328	Knock Sensor 1 Circuit High Input (Bank 1 or Single Sensor)
P0329	Knock Sensor 1 Circuit Input Intermittent (Bank 1 or Single Sensor)
P0330	Knock Sensor 2 Circuit (Bank 2)	Circuit Knock sensor (# 2) signal above or below minimum acceptable threshold voltage at particular engine speeds.
P0335	Crankshaft Position Sensor Circuit	A rationality error has been detected for loss of crankshaft position sensor.
P0336 (M)	Crankshaft Position (CKP) Sensor Signal	Problem with voltage signal from CKP.
P0339	Crankshaft Position Sensor Circuit Intermittent	A rationality error has been detected for intermittent loss of crankshaft position sensor.
P0340 (M)	Camshaft Position Sensor A Circuit (Bank 1 or Single Sensor)	A rationality error has been detected for loss of camshaft position sensor (no fuel sync). WJ 1999 &' 2000: Check the camshaft target wheel (located on the right side camshaft sprocket) for damage or excessive runout. The runout is very critical for proper camshaft signal input to the JTEC. The lateral runout on the target wheel should not exceed 0.012 inch.
P0341 (M)	Camshaft Position Sensor A Circuit Range/Performance (Bank 1 or Single Sensor)
P0342 (M)	Camshaft Position Sensor A Circuit Low Input (Bank 1 or Single Sensor)
P0343 (M)	Camshaft Position Sensor A Circuit High Input (Bank 1 or Single Sensor)
P0344	Camshaft Position Sensor A Circuit Intermittent (Bank 1 or Single Sensor)	A rationality error has been detected for intermittent loss of camshaft position sensor.
P0345	Camshaft Position Sensor A Circuit (Bank 2)
P0346	Camshaft Position Sensor A Circuit Range/Performance (Bank 2)
P0347	Camshaft Position Sensor A Circuit Low Input (Bank 2)
P0348	Camshaft Position Sensor A Circuit High Input (Bank 2)
P0349	Camshaft Position Sensor A Circuit Intermittent (Bank 2)
P0350	Ignition Coil Primary/Secondary Circuit	A coil (1-5) is drawing too much current.
P0351 (M)	Ignition Coil A Primary/Secondary Circuit	Peak primary circuit current not achieved with maximum dwell time.
P0352 (M)	Ignition Coil B Primary/Secondary Circuit	Peak primary circuit current not achieved with maximum dwell time.
P0353 (M)	Ignition Coil C Primary/Secondary Circuit	Peak primary circuit current not achieved with maximum dwell time.
P0354 (M)	Ignition Coil D Primary/Secondary Circuit	Peak primary circuit current not achieved with maximum dwell time (High Impedance).
P0355 (M)	Ignition Coil E Primary/Secondary Circuit	Peak primary circuit current not achieved with maximum dwell time (High Impedance).
P0356 (M)	Ignition Coil F Primary/Secondary Circuit	Peak primary circuit current not achieved with maximum dwell time (high impedance).
P0357 (M)	Ignition Coil G Primary/Secondary Circuit	Peak primary circuit current not achieved with maximum dwell time (high impedance).
P0358 (M)	Ignition Coil H Primary/Secondary Circuit	Peak primary circuit current not achieved with maximum dwell time (high impedance).
P0359	Ignition Coil I Primary/Secondary Circuit	Peak primary circuit current not achieved with maximum dwell time (high impedance).
P0360	Ignition Coil J Primary/Secondary Circuit	Peak primary circuit current not achieved with maximum dwell time (high impedance).
P0361	Ignition Coil K Primary/Secondary Circuit	Peak primary circuit current not achieved with maximum dwell time (high impedance).
P0362	Ignition Coil L Primary/Secondary Circuit	Peak primary circuit current not achieved with maximum dwell time (high impedance).
P0365	Camshaft Position Sensor B Circuit (Bank 1)
P0366	Camshaft Position Sensor B Circuit Range/Performance (Bank 1)
P0367	Camshaft Position Sensor B Circuit Low Input (Bank 1)
P0368	Camshaft Position Sensor B Circuit High Input (Bank 1)
P0369	Camshaft Position Sensor B Circuit Intermittent (Bank 1)
P0370	Timing Reference High Resolution Signal A)
P0371	Timing Reference High Resolution Signal A Too Many Pulses
P0372	Timing Reference High Resolution Signal A Too Few Pulses
P0373	Timing Reference High Resolution Signal A Intermittent/Erratic Pulses
P0374	Timing Reference High Resolution Signal A No Pulse
P0375	Timing Reference High Resolution Signal B
P0376	Timing Reference High Resolution Signal B Too Many Pulses
P0377	Timing Reference High Resolution Signal B Too Few Pulses
P0378	Timing Reference High Resolution Signal B Intermittent/Erratic Pulses
P0379	Timing Reference High Resolution Signal B No Pulses
P0380 (M)	Glow Plug/Heater Circuit A
P0381 (M)	Glow Plug/Heater Indicator Circuit
P0382 (M)	Glow Plug/Heater Circuit B
P0385	Crankshaft Position Sensor B Circuit
P0386	Crankshaft Position Sensor B Circuit Range/Performance
P0387	Crankshaft Position Sensor B Circuit Low Input
P0388	Crankshaft Position Sensor B Circuit High Input
P0389	Crankshaft Position Sensor B Circuit Intermittent
P0390	Camshaft Position Sensor B Circuit (Bank 2)
P0391	Camshaft Position Sensor B Circuit Range/Performance (Bank 2)
P0392	Camshaft Position Sensor B Circuit Low Input (Bank 2)
P0393	Camshaft Position Sensor B Circuit High Input (Bank 2)
P0394	Camshaft Position Sensor B Circuit Intermittent (Bank 2)

Scan Code	DRB Scan Tool Display	Description of Diagnostic Trouble Code
P0400	Diesel EGR System Failure	Diesel EGR control module not active or a fault condition of the dedicated EGR sensors and/or EGR solenoid was detected by the EGR control
P0401 (M)	EGR System Failure	Required change in air/fuel ration not detected during diagnostic test.
P0402 (M)	Exhaust Gas Recirculation Flow Excessive Detected
P0403 (M)	EGR Solenoid Circuit	An open or shorted condition detected in the EGR solenoid control circuit.
P0404 (M)	Exhaust Gas Recirculation Control Circuit Range/Performance	EGR position sensor signal does not correlate to EGR duty cycle.
P0405 (M)	Exhaust Gas Recirculation Sensor A Circuit Low	EGR position sensor input below the acceptable voltage range.
P0406 (M)	Exhaust Gas Recirculation Sensor A Circuit High	EGR position sensor input above the acceptable voltage range.
P0407	Exhaust Gas Recirculation Sensor B Circuit Low
P0408	Exhaust Gas Recirculation Sensor B Circuit High
P0409	Exhaust Gas Recirculation Sensor A Circuit
P0410	Secondary Air Injection System
P0411	Secondary Air Injection System Incorrect Flow Detected
P0412	Secondary Air Injection System Switching Valve A Circuit	An open or shorted condition detected in the secondary air (air switching/aspirator) solenoid control circuit.
P0413	Secondary Air Injection System Switching Valve A Circuit Open
P0414	Secondary Air Injection System Switching Valve A Circuit Shorted
P0415	Secondary Air Injection System Switching Valve B Circuit
P0416	Secondary Air Injection System Switching Valve B Circuit Open
P0417	Secondary Air Injection System Switching Valve B Circuit Shorted
P0418	Secondary Air Injection System Relay A Circuit
P0419	Secondary Air Injection System Relay B Circuit
P0420 (M)	Catalyst System Efficiency Below Threshold (Bank 1)	Catalyst 1/1 efficiency below required level.
P0421	Warm Up Catalyst Efficiency Below Threshold (Bank 1)
P0422	Main Catalyst Efficiency Below Threshold (Bank 1)
P0423	Heated Catalyst Efficiency Below Threshold (Bank 1)
P0424	Heated Catalyst Efficiency Below Threshold (Bank 1)
P0425	Catalyst Temperature Sensor (Bank 1)
P0426	Catalyst Temperature Sensor Range/Performance (Bank 1)
P0427	Catalyst Temperature Sensor Low Input (Bank 1)
P0428	Catalyst Temperature Sensor High Input (Bank 1)
P0429	Catalyst Heater Control Circuit (Bank 1)
P0430	Catalyst System Efficiency Below Threshold (Bank 2)
P0431	Warm Up Catalyst Efficiency Below Threshold (Bank 2)
P0432 (M)	Main Catalyst Efficiency Below Threshold (Bank 2)	Catalyst 2/1 efficiency below required level.
P0433	Heated Catalyst Efficiency Below Threshold (Bank 2)
P0434	Heated Catalyst Temperature Below Threshold (Bank 2)
P0435	Catalyst Temperature Sensor (Bank 2)
P0436	Catalyst Temperature Sensor Range/Performance (Bank 2)
P0436	Catalyst Temperature Sensor Low Input (Bank 2)
P0438	Catalyst Temperature Sensor High Input (Bank 2)
P0439	Catalyst Heater Control Circuit (Bank 2)
P0439	Evaporative Emission Control System
P0441 (M)	Evaporative Emission Control System Incorrect Purge Flow	Insufficient or excessive vapor flow detected during evaporative emission system operation. If after performing all powertrain test for P0441 with results that appear to be normal/test pass, check for fuel in the purge canister. If there is fuel in the purge canister check ORVR (on-board refueling vapor recovery) system per service manual section 25. If ORVO is working as designed insure that the vehicle owner is not overfilling the fuel tank.
P0442 (M)	Evaporative Emission Control System Leak Detected (medium leak)	A 0.040 leak has been detected in the evaporative system. (A faulty gas cap may cause this code). Also see TSB 25-001-02A . Note: The respective Powertrain Diagnostic Procedures Manual will direct the technician to determine if the vehicle evaporative system has an external system leak. Examples of some external system leaks are: a loose gas cap, a disconnected evaporative system hose, or a loose hose connection. Remember that the evaporative system may also have an internal system leak. This internal leak may be caused by an intermittent or permanently stuck open Duty Cycle Purge (DCP) valve. This leak source is considered to be internal because any escaping emissions enter into the engine system and not directly into the atmosphere, unlike an external leak. An internal leak may cause one of the above DTC?s. Possible causes of a stuck open (intermittent or permanent) DCP valve are: 1. Corrosion due to system moisture or possible water intrusion into the system.
P0443 (M)	Evaporative Emission Control System Purge Control Valve Circuit	An open or shorted condition detected in the EVAP purge solenoid control circuit. Check the charcoal canister for fuel saturation If the vehicle has been overfueled, then there is a chance that liquid fuel can enter the canister and cause drive problems or emission related problems.
P0444	Evaporative Emission Control System Purge Control Valve Circuit Open
P0445	Evaporative Emission Control System Purge Control Valve Circuit Shorted
P0446	Evaporative Emission Control System Vent Control Circuit
P0447	Evaporative Emission Control System Vent Control Circuit Open
P0448	Evaporative Emission Control System Vent Control Circuit Shorted
P0449	Evaporative Emission Control System Vent Valve/Solenoid Circuit
P0450	Evaporative Emission Control System Pressure Sensor
P0451	Evaporative Emission Control System Pressure Sensor Range/Performance
P0452	Evaporative Emission Control System Pressure Sensor Low Input	NVLD pressure switch stuck closed.
P0453	Evaporative Emission Control System Pressure Sensor High Input	NVLD pressure switch stuck open.
P0454	Evaporative Emission Control System Pressure Sensor Intermittent
P0455 (M)	Evaporative Emission Control System Leak Detected (large leak)	A large leak has been detected in the evaporative system. See TSB 25-001-02. Also, possible faulty or loose gas cap. Note: The respective Powertrain Diagnostic Procedures Manual will direct the technician to determine if the vehicle evaporative system has an external system leak. Examples of some external system leaks are: a loose gas cap, a disconnected evaporative system hose, or a loose hose connection. Remember that the evaporative system may also have an internal system leak. This internal leak may be caused by an intermittent or permanently stuck open Duty Cycle Purge (DCP) valve. This leak source is considered to be internal because any escaping emissions enter into the engine system and not directly into the atmosphere, unlike an external leak. An internal leak may cause one of the above DTC?s. Possible causes of a stuck open (intermittent or permanent) DCP valve are: 1. Corrosion due to system moisture or possible water intrusion into the system.
P0456 (M)	Evaporative Emission Control System Leak Detected (very small leak)	A 0.020 leak has been detected in the evaporative system. See TSB's 25-001-02A, 18-002-03 and 25-004-01 . Also, possible faulty or loose gas cap. (Also see Notes in P0455 above). Does customer regularly commute on a steep grade (down hill grades in excess of 10%? Has the Leak Detection Pump Operation and Diagnosis booklet (Publication No. 81-170-000606) been used to assist in the diagnosis? Review and if necessary, perform TSB 18-010-02. Be sure to completely read the TSB. The fix for the condition is a PCM replacement, not a reprogramming of the controller. Be sure that there is not any leaks in the system. This TSB applies in a very limited number of cases and usually in mountainous regions. TSB 18-010-02 Is a PCM replacement correct an erroneous MIL illumination for SAE P0456 that sets when driven on steep grades.
P0457	Evaporative Emission Control System Leak Detected (fuel cap loose/off)	A 0.020 leak has been detected in the evaporative system.
P0460	Fuel Level Unit No Change Over Miles	During low fuel.
P0460	Fuel Level Unit No Change Over Miles	Fuel level sending unit voltage does not change for more than 40 miles.
P0461	Fuel Level Sensor Circuit Range/Performance	No level of fuel level sender detected.
P0462 (M)	Fuel Level Sending Unit Volts Too Low	Fuel level sensor input below acceptable voltage.
P0462 (M)	Fuel Level Sending Unit Volts Too Low	Open circuit between PCM and fuel gauge sending unit.
P0463 (M)	Fuel Level Sending Unit Volts Too High	Fuel level sensor input above acceptable voltage.
P0463	Fuel Level Sending Unit Volts Too High	Circuit shorted to voltage between PCM and fuel gauge sending unit.
P0464	Fuel Level Sensor Circuit Intermittent
P0465	EVAP Purge Flow Sensor Circuit
P0466	EVAP Purge Flow Sensor Circuit Range/Performance
P0467	EVAP Purge Flow Sensor Circuit Low Input
P0468	EVAP Purge Flow Sensor Circuit High Input
P0469	EVAP Purge Flow Sensor Circuit Intermittent
P0470	Exhaust Pressure Sensor
P0471	Exhaust Pressure Sensor Range/Performance
P0472	Exhaust Pressure Sensor Low
P0473	Exhaust Pressure Sensor High
P0474	Exhaust Pressure Sensor Intermittent
P0475	Exhaust Pressure Control Valve
P0476	Exhaust Pressure Control Valve Range/Performance
P0477	Exhaust Pressure Control Valve Low
P0478	Exhaust Pressure Control Valve High
P0479	Exhaust Pressure Control Valve Intermittent
P0480	Cooling Fan 1 Control Circuit	An open or shorted condition detected in the low speed radiator fan relay control circuit.
P0481	Cooling Fan 2 Control Circuit	An open or shorted condition detected in the high speed radiator fan relay control circuit.
P0482	Cooling Fan 3 Control Circuit
P0483	Cooling Fan Rationality Check
P0484	Cooling Fan Circuit Over Current
P0485	Cooling Fan Power/Ground Circuit
P0486	Exhaust Gas Recirculation Sensor B Circuit
P0487	Exhaust Gas Recirculation Throttle Position Control Circuit
P0488	Exhaust Gas Recirculation Throttle Position Control Range/Performance
P0491	Secondary Air Injection System (Bank 1)
P0492	Secondary Air Injection System (Bank 2)
P0498	NVLD Canister Vent Valve Solenoid Circuit Low	A shorted low condition detected in NVLD solenoid circuit.
P0499	NVLD Canister Vent Valve Solenoid Circuit High	A shorted high condition detected in NVLD solenoid circuit.

Scan Code	DRB Scan Tool Display	Description of Diagnostic Trouble Code
P0500 (M)	No Vehicle Speed Sensor Signal	No vehicle speed sensor signal detected during road load conditions.
P0500 (M)	No Vehicle Speed Sensor Signal	A vehicle speed signal was not detected.
P0501	Vehicle Speed Sensor # 1 Performance	A rationality error has been detected for no vehicle speed sensor signal detected during road load conditions.
P0502	Vehicle Speed Sensor Circuit Low Input
P0503	Vehicle Speed Sensor Intermittent/Erratic/High
P0505 (M)	Idle Air Control Motor Circuits	Replace idle air control motor.
P0506	Idle Control System RPM Lower Than Expected
P0507	Idle Control System RPM Higher Than Expected
P0508 (M)	Idle Air Control Motor Circuit Low	Idle Air Control Motor Circuit input below acceptable current.
P0509 (M)	Idle Air Control Motor Circuit High	Idle Air Control Motor Circuit input above acceptable current.
P0510	Closed Throttle Position Switch
P0511	Idle Air Control Valve Solenoid Circuit	An open or shorted condition detected in the IAC control circuit.
P0512	Starter Request Circuit
P0513	Invalid SKIM Key	The engine controller has received an invalid key from the Smart Key Immobilizer Module.
P0515	Battery Temperature Sensor Circuit
P0516	Battery Temperature Sensor Low	Battery temperature sensor input is below minimum acceptable voltage.
P0517	Battery Temperature Sensor High	Battery temperature sensor input above maximum acceptable voltage.
P0519	Idle Speed Performance	A rationality error has been detected for target RPM not met during drive idle condition. Possible Vacuum leak or IAC lost steps.
P0520	Engine Oil Pressure Sensor/Switch Circuit
P0521	Engine Oil Pressure Sensor/Switch Range/Performance
P0522	Oil Pressure Sensor Low	Oil pressure sensor input below acceptable voltage.
P0523	Oil Pressure Sensor High	Oil pressure sensor input above acceptable voltage.
P0524	Engine Oil Pressure Too Low
P0530	A/C Refrigerant Pressure Sensor Circuit
P0531	A/C Refrigerant Pressure Sensor Circuit Range/Performance
P0532	A/C Refrigerant Pressure Sensor Circuit Low Input	A/C pressure sensor input below the minimum acceptable voltage.
P0533	A/C Refrigerant Pressure Sensor Circuit High Input	A/C pressure sensor input above the maximum acceptable voltage.
P0534	Air Conditioner Refrigerant Charge Loss
P0540	Intake Air Heater Circuit
P0541	Intake Air Heater Circuit Low
P0542	Intake Air Heater Circuit High
P0544	Exhaust Gas Temperature Sensor Circuit (Bank 1)
P0545	Exhaust Gas Temperature Sensor Circuit Low (Bank 1)
P0546	Exhaust Gas Temperature Sensor Circuit High (Bank 1)
P0547	Exhaust Gas Temperature Sensor Circuit (Bank 2)
P0548	Exhaust Gas Temperature Sensor Circuit Low (Bank 2)
P0549	Exhaust Gas Temperature Sensor Circuit High (Bank 2)
P0550	Power Steering Pressure Sensor Circuit
P0551 (M)	Power Steering Pressure Sensor Circuit Range/Performance	Incorrect input state detected for the power steering switch circuit (for PL, high pressure seen at high speed)
P0552	Power Steering Pressure Sensor Circuit Low Input
P0553	Power Steering Pressure Sensor Circuit High Input
P0554	Power Steering Pressure Sensor Circuit Intermittent
P0560	System Voltage
P0561	System Voltage Unstable
P0562	Battery Voltage Low	Battery voltage sensor input below the minimum acceptable voltage.
P0563	Battery Voltage High	Battery voltage sensor input above the maximum acceptable voltage.
P0564	Cruise Control Multi-Function Input Signal
P0565	Cruise Control On Signal
P0566	Cruise Control Off Signal
P0567	Cruise Control Resume Signal
P0568	Cruise Control Set Signal
P0569	Cruise Control Coast Signal
P0570	Cruise Control Accelerate Signal
P0571	Cruise Control/Brake Switch A Circuit
P0572	Cruise Control/Brake Switch A Circuit Low
P0573	Cruise Control/Brake Switch A Circuit High
P0574	Cruise Control System - Vehicle Speed Too High
P0575	Cruise Control Input Circuit
P0576	Cruise Control Input Circuit Low
P0577	Cruise Control Input Circuit High
P0578	Reserved for Cruise Control Codes
P0579	Speed Control Switch # 1 Performance	Cruise switch stuck in a valid voltage range.
P0580	Speed Control Switch # 1 Low	Speed control switch input below minimum acceptable voltage.
P0581	Speed Control Switch # 1 High	Speed control switch input above maximum acceptable voltage.
P0582	Speed Control Vacuum Solenoid Circuit	An open or shorted condition detected in speed control Vacuum solenoid control circuit.
P0586	Speed Control Vent Solenoid Circuit	An open or shorted condition detected in speed control vent solenoid control circuit.
P0594	Speed Control Servo Power Circuit	An open or shorted condition open/short condition detected in the speed control servo power control circuit.

Scan Code	DRB Scan Tool Display	Description of Diagnostic Trouble Code
P0600 (M)	PCM Failure SPI Communications	No communication detected between co-processors in the control module.
P0601 (M)	Internal Controller Failure	Internal control module fault condition (check sum) detected.
P0602 (M)	Control Module Programming Error
P0603	Internal Control Module Keep Alive Memory (KAM) Error
P0604	Internal Transmission Controller	Transmission control module RAM self-test fault detected. -Asian transmission.
P0605	Internal Transmission Controller	Transmission control module ROM self-test fault detected -Asian transmission.
P0606 (M)	ECM/PCM Processor
P0607	Control Module Performance
P0608	Control Module VSS Output A
P0609	Control Module VSS Output B
P0610	Control Module Vehicle Options Error
P0615	Starter Relay Circuit	Open or shorted condition detected in the starter relay control circuit.
P0616	Starter Relay Circuit Low
P0617	Starter Relay Circuit High
P0618	Alternative Fuel Control Module KAM Error
P0619	Alternative Fuel Control Module RAM/ROM Error
P0620	Generator Control Circuit
P0621	Generator Lamp L Terminal Control Circuit
P0622 (G)	Generator Field Not Switching Properly	An open or shorted condition detected in the generator field control circuit.
P0623	Generator Lamp Control Circuit
P0624	Fuel Cap Lamp Control Circuit
P0627	Fuel Pump Relay Circuit	An open or shorted condition detected in the fuel pump relay control circuit.
P0630	VIN Not Programmed	In PCM VIN is not programmed in the control module EEPROM.
P0631	VIN Not Programmed or Mismatch - TCM
P0632	Odometer Not Programmed	In PCM Odometer is not programmed in the control module EEPROM.
P0633	SKIM Key Not Programmed	In PCM SKIM secret key is not programmed in the control module EEPROM.
P0635	Power Steering Control Circuit
P0636	Power Steering Control Circuit Low
P0637	Power Steering Control Circuit High
P0638	Throttle Actuator Control Range/Performance (Bank 1)
P0639	Throttle Actuator Control Range/Performance (Bank 2)
P0640	Intake Air Heater Control Circuit
P0645	A/C Clutch Relay Circuit	An open or shorted condition detected in the A/C clutch relay control circuit.
P0646	A/C Clutch Relay Control Circuit Low
P0647	A/C Clutch Relay Control Circuit High
P0648	Immobiliser Lamp Control Circuit (Immobiliser pending SAE J1930 approval)
P0649	Speed Control Lamp Control Circuit
P0650	Malfunction Indicator Lamp (MIL) Control Circuit
P0654	Engine RPM Output Circuit
P0655	Engine Hot Lamp Output Control Circuit
P0656	Fuel Level Output Circuit
P0660	Intake Manifold Tuning Valve Control Circuit (Bank 1)	An open or shorted condition detected in the manifold tuning valve solenoid control circuit.
P0661	Intake Manifold Tuning Valve Control Circuit Low (Bank 1)
P0662	Intake Manifold Tuning Valve Control Circuit High (Bank 1)
P0663	Intake Manifold Tuning Valve Control Circuit (Bank 2)
P0664	Intake Manifold Tuning Valve Control Circuit Low (Bank 2)
P0665	Intake Manifold Tuning Valve Control Circuit High (Bank 2)
P0685	ASD Relay Control Circuit	An open or shorted condition detected in the ASD relay control circuit.
P0688	ASD Relay Sensor Circuit Low	ASD voltage sensed when ASD relay is energized or ASD voltage not sensed when ASD relay is not energized.

Scan Code	DRB Scan Tool Display	Description of Diagnostic Trouble Code
P0700 (M)	Check Transmission DTC's	This code indicates that the EATX (Transmission controller) has an active fault and has illuminated the MIL via a BUS message. The specific fault must be acquired from the EATX via a DRBIII tool. (Input or Output Speed Sensor failures often cause this code and are a common failure part on WJ Grand Cherokees).
P0701	Transmission Control System Range/Performance
P0702	Transmission Control System Electrical
P0703 (M)	Brake Switch Stuck Pressed or Released	Incorrect input state detected in the brake switch circuit. (Changed from P1595).
P0704	Clutch Switch Input Circuit Malfunction
P0705	Transmission Range Sensor Circuit Malfunction (PRNDL Input)
P0706	Transmission Range Sensor Circuit Range/Performance
P0707	Transmission Range Sensor Circuit Low Input
P0708	Transmission Range Sensor Circuit High Input
P0709	Transmission Range Sensor Circuit Intermittent
P0710	Transmission Fluid Temperature Sensor Circuit
P0711 (M)	Transmission Temperature Sensor No Temperature Rise After Start	Relationship between the transmission temperature and overdrive operation and or TCC operation indicates a failure of the Transmission Temperature Sensor - OBDII Rationality.
P0712 (M)	Transmission Temperature Sensor Voltage Too Low	Transmission fluid temperature sensor input below acceptable voltage.
P0713	Transmission Temperature Sensor Voltage Too High	Transmission fluid temperature sensor input above acceptable voltage. Was MIL code 37.
P0713 (M)	Transmission Temperature Sensor Voltage Too High	Voltage greater than 3.76 volts (4-speed auto. trans. only).
P0714	Transmission Fluid Temperature Sensor Circuit Intermittent
P0715	Input/Turbine Speed Sensor Circuit
P0716	Input/Turbine Speed Sensor Circuit Range/Performance
P0717	Input/Turbine Speed Sensor Circuit No Signal
P0718	Input/Turbine Speed Sensor Circuit Intermittent
P0719	Torque Converter/Brake Switch B Circuit Low
P0720 (M)	Low Output SPD Sensor RPM Above 15 MPH	The relationship between the Output Shaft Speed Sensor and vehicle speed is not within acceptable limits.
P0720 (M)	Low Output SPD Sensor RPM Above 15 MPH	Output shaft speed is less than 60 rpm with vehicle speed above 15 mph (4-speed auto. trans. only).
P0721	Output Speed Sensor Circuit Range/Performance
P0722	Output Speed Sensor Circuit No Signal
P0723	Output Speed Sensor Circuit Intermittent
P0724	Torque Converter/Brake Switch B Circuit High
P0725	Engine Speed Input Circuit
P0726	Engine Speed Input Circuit Range/Performance
P0727	Engine Speed Input Circuit No Signal
P0728	Engine Speed Input Circuit Intermittent
P0730	Incorrect Gear Ratio
P0731	Gear 1 Incorrect Ratio
P0732	Gear 2 Incorrect Ratio
P0733	Gear 3 Incorrect Ratio
P0734	Gear 4 Incorrect Ratio
P0735	Gear 5 Incorrect Ratio
P0736	Reverse Incorrect Ratio
P0737	TCM Engine Speed Output Circuit
P0738	TCM Engine Speed Output Circuit Low
P0739	TCM Engine Speed Output Circuit High
P0740 (M)	Torque Con Clu No RPM Drop at Lockup	Relationship between engine and vehicle speeds indicated failure of torque convertor clutch lock-up system (TCC/PTU sol).
P0743 (M)	Torque Converter Clutch Solenoid/Transmission Relay Circuits	An open or shorted condition detected in the torque converter clutch (part throttle unlock) solenoid control circuit. Shift solenoid C electrical fault - Aisin transmission.
P0743 (M)	Torque Converter Clutch Solenoid/Transmission Relay Circuits	An open or shorted condition detected in the torque converter part throttle unlock solenoid control circuit (3 or 4-speed auto. trans. only).
P0744	Torque Converter Clutch Circuit Intermittent
P0745	Pressure Control Solenoid A
P0746	Pressure Control Solenoid A Performance or Stuck Off
P0747	Pressure Control Solenoid A Stuck On
P0748 (M)	Governor Pressure Solenoid Control/Transmission Relay Circuits	An open or shorted condition detected in the Governor Pressure Solenoid circuit or Transmission Relay Circuit in JTEC RE transmissions.
P0748 (M)	Governor Pressure Solenoid Control/Transmission Relay Circuits	An open or shorted condition detected in the governor pressure solenoid or relay circuits (4-speed auto. trans. only).
P0749	Pressure Control Solenoid A Intermittent
P0750	Shift Solenoid circuit.	Note: If code P1767 (Transmission Relay Always On) is also present: Replace transmission solenoid assembly. See note provided. When transmission is in limp mode the relay that provides power to the solenoid group is switched off. This is normal and is designed to provide operation in one gear only. Engineering department suggests to replace transmission solenoid assembly anytime these two trouble codes occur together. See applicable service manual section (21) for solenoid assembly replacement directions. IMPORTANT: When performing this repair always check torque on all valvebody accumulator cover plate screws. Proper torque specification is 70 inch pounds. If any accumulator cover plate screws are damaged or missing replace the valvebody assembly. NOTE: If any other trouble codes are present do not replace solenoid assembly. See test in the applicable Transmission Diagnostic Procedures Manual.
P0751 (M)	O/D Switch Pressed (Lo) More Than 5 Minutes	Overdrive Off switch input too low for more than 5 minutes (4-speed auto. trans. only).
P0752	Shift Solenoid A Stuck On
P0753 (M)	Transmission 3-4 Shift Sol/Transmission Relay Circuits	An open or shorted condition detected in the overdrive solenoid control circuit or Transmission Relay Circuit in JTEC RE transmissions.
P0753 (M)	Transmission 3-4 Shift Sol/Transmission Relay Circuits	An open or shorted condition detected in the transmission 2-4 shift solenoid circuit (4-speed auto. trans. only).
P0754	Shift Solenoid A Intermittents
P0755	Shift Solenoid B
P0756	AW4 Shift Sol B (2-3) Functional Failure	Shift solenoid B (2-3) functional fault - Asian transmission.
P0757	Shift Solenoid B Stuck On
P0758	Shift Solenoid B Electrical
P0759	Shift Solenoid B Intermittent
P0760	Shift Solenoid C
P0761	Shift Solenoid C Performance or Stuck Off
P0762	Shift Solenoid C Stuck On
P0763	Shift Solenoid C Electrical
P0764	Shift Solenoid C Intermittent
P0765	Shift Solenoid D
P0766	Shift Solenoid D Performance or Stuck Off
P0767	Shift Solenoid D Stuck On
P0768	Shift Solenoid D Electrical
P0769	Shift Solenoid D Intermittent
P0770	Shift Solenoid E
P0771	Shift Solenoid E Performance or Stuck Off
P0772	Shift Solenoid E Stuck On
P0773	Shift Solenoid E Electrical
P0774	Shift Solenoid E Intermittent
P0775	Pressure Control Solenoid B
P0776	Pressure Control Solenoid B Performance or Stuck off
P0777	Pressure Control Solenoid B Stuck On
P0778	Pressure Control Solenoid B Electrical
P0779	Pressure Control Solenoid B Intermittent
P0780	Shift
P0781	1-2 Shift
P0782	2-3 Shift
P0783	3-4 Shift Sol	No RPM Drop at Lockup
P0784	4-5 Shift
P0785	Shift/Timing Solenoid
P0786	Shift/Timing Solenoid Range/Performance
P0787	Shift/Timing Solenoid Low
P0788	Shift/Timing Solenoid High
P0789	Shift/Timing Solenoid Intermittent
P0790	Normal/Performance Switch Circuit
P0791	Intermediate Shaft Speed Sensor Circuit
P0792	Intermediate Shaft Speed Sensor Circuit Range/Performance
P0793	Intermediate Shaft Speed Sensor Circuit No Signal
P0794	Intermediate Shaft Speed Sensor Circuit Intermittent
P0795	Pressure Control Solenoid C
P0796	Pressure Control Solenoid C Performance or Stuck off
P0797	Pressure Control Solenoid C Stuck On
P0798	Pressure Control Solenoid C Electrical
P0799	Pressure Control Solenoid C Intermittent

Scan Code	DRB Scan Tool Display	Description of Diagnostic Trouble Code
P0801	Reverse Gear Lockout Circuit Open or Short	An open or shorted condition detected in the transmission reverse gear lock-out solenoid control circuit.
P0803	1-4 Upshift (Skip Shift) Solenoid Control Circuit
P0804	1-4 Upshift (Skip Shift) Lamp Control Circuit
P0805	Clutch Position Sensor Circuit
P0806	Clutch Position Sensor Circuit Range/Performance
P0807	Clutch Position Sensor Circuit Low
P0808	Clutch Position Sensor Circuit High
P0809	Clutch Position Sensor Circuit Intermittent
P0810	Clutch Position Control Error
P0811	Excessive Clutch Slippage
P0812	Reverse Input Circuit
P0813	Reverse Output Circuit
P0814	Transmission Range Display Circuit
P0815	Upshift Switch Circuit
P0816	Downshift Switch Circuit
P0817	Starter Disable Circuit
P0818	Driveline Disconnect Switch Input Circuit
P0820	Gear Lever X-Y Position Sensor Circuit
P0821	Gear Lever X Position Circuit
P0822	Gear Lever Y Position Circuit
P0823	Gear Lever X Position Circuit Intermittent
P0824	Gear Lever Y Position Circuit Intermittent
P0825	Gear Lever Push-Pull Switch (Shift Anticipate)
P0830	Clutch Pedal Switch A Circuit
P0831	Clutch Pedal Switch A Circuit Low
P0832	Clutch Pedal Switch A Circuit High
P0833	Clutch Upstop Switch Performance	Rationality error detected for clutch upstop switch performance.
P0834	Clutch Pedal Switch B Circuit Low
P0835	Clutch Pedal Switch B Circuit High
P0836	Four Wheel Drive (4WD) Switch Circuit	Four wheel drive (4WD) muxed switch input detected below minimum or above maximum acceptable voltage (switch status provided to engine module from transfer case module during 4WD low gear engagements)
P0837	Four Wheel Drive (4WD) Switch Circuit Range/Performance	Four wheel drive (4WD) muxed switch input detected in invalid or irrational switch state (switch status provided to engine module from transfer case module during 4WD low gear engagements)
P0838	Four Wheel Drive (4WD) Switch Circuit Low
P0839	Four Wheel Drive (4WD) Switch Circuit High
P0840	Transmission Fluid Pressure Sensor/Switch A Circuit
P0841	Transmission Fluid Pressure Sensor/Switch A Circuit Range/Performance
P0842	Transmission Fluid Pressure Sensor/Switch A Circuit Low
P0843	Transmission Fluid Pressure Sensor/Switch A Circuit High
P0844	Transmission Fluid Pressure Sensor/Switch A Circuit Intermittent
P0845	Transmission Fluid Pressure Sensor/Switch B Circuit
P0846	Transmission Fluid Pressure Sensor/Switch B Circuit Range/Performance
P0847	Transmission Fluid Pressure Sensor/Switch B Circuit Low
P0848	Transmission Fluid Pressure Sensor/Switch B Circuit High
P0849	Transmission Fluid Pressure Sensor/Switch B Circuit Intermittent
P0850	Park/Natural Switch Performance	A rationality error has been detected for park/neutral switch performance.

Scan Code	DRB Scan Tool Display	Description of Diagnostic Trouble Code
P1105	Baro Read Solenoid Circuit	Open or shorted condition detected in the baro read solenoid control circuit.
P1110	Decrease Engine Performance Due To High Intake Air Temperature
P1115	General Temperature Rationality	General temperature sensor rationality error.
P1180	Decrease Engine Performance Due To High Injection Pump Fuel Temp
P1192 (M)	Inlet Air Temperature Circuit Low	Inlet Air Temperature sensor input below acceptable voltage
P1193 (M)	Inlet Air Temperature Circuit High	Inlet Air Temperature sensor input above acceptable voltage.
P1194	PWM O2 Heater Performance	Incorrect or irrational performance has been detected for the PWM O2 heater circuit.
P1195 (M)	1/1 02 Sensor Slow During Catalyst Monitor	A slow switching oxygen sensor has been detected in bank 1/1 during catalyst monitor test. (Also see SCI DTC $66) (was P0133)
P1196 (M)	2/1 02 Sensor Slow During Catalyst Monitor	A slow switching oxygen sensor has been detected in bank 2/1 during catalyst monitor test. (was P0153)
P1197	1/2 02 Sensor Slow During Catalyst Monitor	A slow switching oxygen sensor has been detected in bank 1/2 during catalyst monitor test. (was P0139)
P1198	Radiator Temperature Sensor Volts Too High	Radiator coolant temperature sensor input above the maximum acceptable voltage.
P1199	Radiator Temperature Sensor Volts Too Low	Radiator coolant temperature sensor input below the minimum acceptable voltage.

Scan Code	DRB Scan Tool Display	Description of Diagnostic Trouble Code
P1243	Surge Valve Solenoid Circuit	Open or shorted condition detected in the turbocharger surge valve solenoid control circuit
P1280	Fuel System Relay Circuit
P1281	Engine is Cold Too Long	Engine coolant temperature remains below normal operating temperatures during vehicle travel (Thermostat).
P1282	Fuel Pump Relay Control Circuit	An open or shorted condition detected in the fuel pump relay control circuit.
P1283	Idle Select Signalk Invalid
P1284 (M)	Fuel Injection Pump Battery Voltage Out-Of-Range
P1285	Fuel Injection Pump Controller Always On
P1286	Accelerator Position Sensor Supply Voltage Too High
P1287 (M)	Fuel Injection Pump Controller Supply Voltage Low
P1288	Intake Manifold Short Runner Solenoid Circuit	An open or shorted condition detected in the short runner tuning valve circuit.
P1289	Manifold Tune Valve Solenoid Circuit	An open or shorted condition detected in the manifold tuning valve solenoid control circuit.
P1290	CNG Fuel System Pressure Too High	Compressed natural gas system pressure above normal operating range.
P1291 (M)	No Temp Rise Seen From Intake Heaters	Energizing Heated Air Intake does not change intake air temperature sensor an acceptable amount.
P1291 (M)	No Temp Rise Seen From Intake Heaters	Problem detected in intake manifold air heating system.
P1292	CNG Pressure Sensor Voltage Too High	Compressed natural gas pressure sensor reading above acceptable voltage.
P1293	CNG Pressure Sensor Voltage Too Low	Compressed natural gas pressure sensor reading below acceptable voltage.
P1294 (M)	Target Idle Not Reached	Target RPM not achieved during drive idle condition. Possible vacuum leak or IAC (AIS) lost steps.
P1295 (M)	No 5 Volts to TP Sensor	Loss of a 5 volt feed to the Throttle Position Sensor has been detected.
P1295 (M)	Accelerator Position Sensor (APPS) Supply Voltage Too Low	APPS supply voltage input below the minimum acceptable voltage.
P1296	No 5 Volts to MAP Sensor	Loss of a 5 volt feed to the MAP Sensor has been detected.
P1297 (M)	No Change in MAP From Start To Run	No difference is recognized between the MAP reading at engine idle and the stored barometric pressure reading.
P1298	Lean Operation at Wide Open Throttle	A prolonged lean condition is detected during Wide Open Throttle.
P1299 (M)	Vacuum Leak Found (IAC Fully Seated)	MAP Sensor signal does not correlate to Throttle Position Sensor signal. Possible vacuum leak.

Scan Code	DRB Scan Tool Display	Description of Diagnostic Trouble Code
P1388	Auto Shutdown Relay Control Circuit	An open or shorted condition detected in the ASD or CNG shutoff relay control ckt.
P1388	Auto Shutdown Relay Control Circuit	An open or shorted condition detected in the auto shutdown relay circuit.
P1389 (M)	No ASD Relay Output Voltage At PCM	No Z1 or Z2 voltage sensed when the auto shutdown relay is energized.
P1389 (M)	No ASD Relay Output Voltage At PCM	An open condition detected In the ASD relay output circuit.
P1390 (M)	Timing Belt Skipped 1 Tooth or More	Relationship between Cam and Crank signals not correct.
P1391 (M)	Intermittent Loss of CMP or CKP	Loss of the Cam Position Sensor or Crank Position sensor has occurred. For PL 2.0L
P1398 (M)	Mis-Fire Adaptive Numerator at Limit	PCM is unable to learn the Crank Sensor's signal in preparation for Misfire Diagnostics. Probable defective Crank Sensor.
P1399	Wait To Start Lamp Circuit	An open or shorted condition detected in the Wait to Start Lamp circuit.

Scan Code	DRB Scan Tool Display	Description of Diagnostic Trouble Code
P1403	No 5 Volts to EGR Sensor	Loss of 5v feed to the EGR position sensor.
P1475	Aux 5 Volt Supply Voltage High
P1476	Too Little Secondary Air	Insufficient flow of secondary air injection detected during aspirator test.(was P0411)
P1477	Too Much Secondary Air	Excessive flow of secondary air injection detected during aspirator test (was P0411).
P1478 (M)	Battery Temp Sensor Volts Out of Limit	Internal temperature sensor input voltage out of an acceptable range.
P1479	Transmission Fan Relay Circuit	An open or shorted condition detected in the transmission fan relay circuit.
P1480	PCV Solenoid Circuit	An open or shorted condition detected in the PCV solenoid circuit.
P1481	EATX RPM Pulse Performance	ETAX RPM pulse generator signal for Misfire detection does not correlate with expected value.
P1482	Catalyst Temperature Sensor Circuit Shorted Low	Catalyst temperature sensor circuit shorted low.
P1483	Catalyst Temperature Sensor Circuit Shorted High	Catalyst temperature sensor circuit shorted high.
P1484	Catalytic Converter Overheat Detected	A catalyst overheat condition has been detected by the catalyst temperature sensor.
P1485	Air Injection Solenoid Circuit	An open or shorted condition detected in the air assist solenoid circuit.
P1486 (M)	Evap Leak Monitor Pinched Hose Found	LDP has detected a pinched hose in the evaporative hose system.
P1487	High-Speed Radiator Fan CTRL Relay Circuit	An open or shorted condition detected in the control circuit of the # 2 high-speed radiator fan control relay.
P1488	Auxiliary 5 Volt Supply Output Too Low	Auxiliary 5 volt sensor feed is sensed to be below an acceptable limit.
P1488	Auxiliary 5 Volt Supply Output Too Low	Sensor supply voltage for ECM sensors is too low.
P1489 (M)	High Speed Fan CTRL Relay Circuit	An open or shorted condition detected in the control circuit of the high-speed radiator fan control relay.
P1490 (M)	Low Speed Fan CTRL Relay Circuit	An open or shorted condition detected in control circuit of the low-speed radiator fan control relay.
P1491	Radiator Fan Control Relay Circuit	An open or shorted condition detected in the radiator fan control relay control circuit. This includes PWM solid state relays.
P1492	Ambient/Battery Temperature Sensor Volts Too High	External temperature sensor input above acceptable voltage.
P1492 (M or G)	Ambient/Battery Temperature Sensor Volts Too High	Battery temperature sensor input voltage above an acceptable range.
P1493 (M or G)	Ambient/Battery Temperature Sensor Volts Too Low	External temperature sensor input below acceptable voltage.
P1493 (M or G)	Ambient/Battery Temperature Sensor Volts Too Low	Battery temperature sensor input voltage below an acceptable range.
P1494 (M)	Leak Detection Pump Sw or Mechanical Fault	Incorrect input state detected for the Leak Detection Pump (LDP) pressure switch.
P1495 (M)	Leak Detection Pump Solenoid Circuit	An open or shorted condition detected in the Leak Detection Pump (LDP) solenoid circuit.
P1496 (M)	5 Volt Supply	Output Too Low
P1498	High Speed Radiator Fan Ground CTRL Relay Circuit	An open or shorted condition detected in the control circuit of the # 3 high speed radiator fan control relay.
P1499	Hydraulic Cooling Fan Solenoid Circuit	See TSB 07-005-02

Scan Code	DRB Scan Tool Display	Description of Diagnostic Trouble Code
P1594 (G)	Charging System Voltage Too High	Battery voltage sense input above target charging voltage during engine operation.
P1595	Speed Control Solenoid Circuits	An open or shorted condition detected in either of the speed control vacuum or vent solenoid control circuits.
P1596	Speed Control Switch Always High	Speed control switch input above maximum acceptable voltage. Check the bottom row of pins in the C200 connector for contamination If the bulkhead (C200 connector in some applications as DN model) is contaminated by moisture, the speed control may not set. This may occur after driving the vehicle in rain or by washing the vehicle. Also if the rear heater water pump is leaking, as on a DN model with rear heat, the C200 could be contaminated with anti-freeze. Once connector is cleaned from antifreeze contamination, review water pump for potential leak and repair as necessary. If there is water intrusion into the connector, dry the connector and repair area that is allowing water into the connector. This area is the source of many speed control complaints. Various fault codes can be set due to contamination of this connector.
P1597	Speed Control Switch Always Low	Speed control switch input below minimum acceptable voltage. See P1596 above.
P1598	A/C Pressure Sensor Volts Too High	A/C pressure sensor input above maximum acceptable voltage.
P1598	A/C Pressure Sensor Volts Too High	Problem detected in air conditioning electrical circuit.
P1599	A/C Pressure Sensor Volts Too Low	A/C pressure sensor input below minimum acceptable voltage.
P1599	A/C Sensor Input Lo	Problem detected in air conditioning electrical circuit.

Scan Code	DRB Scan Tool Display	Description of Diagnostic Trouble Code
P1602 (M)	PCM not Programmed	PCM not programmed (generic controller fault).
P1603	PCM Internal Dual Port Ram Communication	Dual port RAM communication link error.
P1604	PCM Internal Dual Port Ram Read/Write Integrity Failure	Dual port RAM read/write error. Review and if necessary, perform TSB 18-005-03
P1607	PCM internal Shutdown Timer Rationality	A rationality error has been detected for the shutdown timer.
P1680	Clutch Released Switch Circuit
P1681	No I/P Cluster CCD/J1850 Messages Received	No CCD/J1850 messages received from the cluster control module.
P1682 (G)	Charging System Voltage Too Low	Battery voltage sense input below target charging voltage during engine operation and no significant change in voltage detected during active test of generator output circuit.
P1682 (G)	Charging System Voltage Too Low	Charging System Voltage Too Low Charging system output voltage low.
P1683	SPD CTRL PWR Relay; or S/C 12v Driver Circuit	An open or shorted condition detected in the speed control servo power control circuit (SBECII: external relay).
P1684	Battery Loss In The Last 50 Starts	The battery has been disconnected within the last 50 starts. starts (status indicator only - NOT a reported fault code)
P1685	Skim Invalid Key	The engine controller has received an invalid key from the SKIM.
P1686	No SKIM BUS Messages Received	No CCD/J1850 messages received from the Smart Key Immobilizer Module (SKIM).
P1687	No MIC BUS Message	No CCD/J1850 messages received from the Mechanical Instrument Cluster (MIC) Module.
P1688 (M)	Internal Fuel Injection Pump Controller Failure
P1689 (M)	No Communication Between ECM and Injection Pump Module
P1690 (M)	Fuel Injection Pump CKP Sensor Does Not Agree with ECM CKP Sensor
P1691	Fuel Injection Pump Controller Calibration Error
P1692	DTC Set in ECM
P1693 (M)	DTC Detected in Companion Module	A fault has been generated in the companion engine control module.
P1693 (M)	DTC Detected in PCM/ECM or DTC Detected in ECM	A “Companion DTC” was set in both the ECM and PCM.
P1694	Fault In Companion Module	No CCD/J1850 messages received from the powertrain control module-Asian transmission.
P1694 (M)	No BUS CCD Messages Received from ECM	Bus communication failure to PCM.
P1695	No CCD/J1850 Message From Body Control Module	No CCD/J1850 messages received from the body control module.
P1696 (M)	PCM Failure EEPROM Write Denied	Unsuccessful attempt to write to an EEPROM location by the control module.
P1697 (M)	PCM Failure SRI Mile Not Stored	Unsuccessful attempt to update Service Reminder Indicator (SRI or EMR) mileage in the control module EEPROM.
P1698 (M)	No CCD/J1850 Message From TCM	No CCD/J1850 messages received from the electronic transmission control module (EATX) or the Asian transmission controller.
P1698 (M)	No CCD/J1850 Message From PCM	Bus communication failure to PCM. A “Companion DTC” was set in both the ECM and PCM. May be caused by after market remote starter. Remove after market remote starter. This code can be set as the remote starter is activated and the pcm receives ignition run voltage and the tcm does not.
P1699	No Climate Bus Messages	No CCD/J1850 messages received from the Climate Control Module (CCM)

Scan Code	DRB Scan Tool Display	Description of Diagnostic Trouble Code
P1719	Skip Shift Solenoid Circuit	An open or shorted condition detected in the transmission 2-3 gear lock-out solenoid control circuit.
P1740 (M)	TCC or O/D Solenoid Performance	Rationality error detected in either the torque convertor clutch or solenoid or overdrive solenoid system.
P1740 (M)	TCC or O/D Solenoid Performance	Problem detected in transmission convertor clutch and/or overdrive circuits (diesel engine with 4-speed auto. trans. only).
P1756 (M)	GOV Press Not Equal to Target @ 15-20 PSI	The requested pressure and the actual pressure are not within a tolerance band for the Governor Control System which is used to regulate governor pressure to control shifts for 1st 2nd and 3rd gear (Mid Pressure Malfunction).
P1756 (M)	GOV Press Not Equal to Target @ 15-20 PSI	Governor sensor input not between 10 and 25 psi when requested (4-speed auto. trans. only).
P1757	GOV Press Not Equal to Target @ 15-20 PSI	The requested pressure and the actual pressure are not within a tolerance band for the Governor Control System which is used to regulate governor pressure to control shifts for 1st 2nd and 3rd gear (Zero Pressure Malfunction).
P1757 (M)	Governor Pressure Above 3 PSI In Gear With 0 MPH	Governor pressure greater than 3 psi when requested to be 0 psi (4-speed auto. trans. only).
P1762 (M)	Governor Pressure Sensor Offset Volts Too Low or High	Sensor input greater or less than calibration for 3 consecutive Neutral/Park occurrences (4-speed auto. trans. only).
P1763	Governor Pressure Sensor Volts Too High	The Governor Pressure Sensor input is above an acceptable voltage level.
P1763 (M)	Governor Pressure Sensor Volts Too High	Voltage greater than 4.89 volts (4-speed auto. trans. only).
P1764 (M)	Governor Pressure Sensor Volts Too Low	The Governor Pressure Sensor input is below an acceptable voltage level.
P1764 (M)	Governor Pressure Sensor Volts Too Low	Voltage less than.10 volts (4-speed auto. trans. only).
P1765 (M)	Transmission 12 Volt Supply Relay CTRL Circuit	An open or shorted condition is detected in the Transmission Relay control circuit. This relay supplies power to the TCC.
P1765 (M)	Trans 12 Volt Supply Relay CTRL Circuit	Current state of solenoid output port is different than expected (4-speed auto. trans. only).
P1767 (M)	Transmission Relay Always On.	See P0750

Scan Code	DRB Scan Tool Display	Description of Diagnostic Trouble Code
P1830	Clutch Override Relay Circuit
P1899 (M)	P/N Switch Stuck in Park or in Gear	Incorrect input state detected for the Park/Neutral switch.
P1899 (M)	P/N Switch Stuck in Park or in Gear	Incorrect input state detected for the Park/Neutral switch (3 or 4-speed auto. trans. only).

Scan Code	DRB Scan Tool Display	Description of Diagnostic Trouble Code
P2008	Short Runner Valve Solenoid Circuit	An open or shorted condition detected in the short runner tuning valve control circuit.
P2302	Ignition Coil Secondary # 1 Circuit
P2305	Ignition Coil Secondary # 2 Circuit
P2308	Ignition Coil Secondary # 3 Circuit
P2311	Ignition Coil Secondary # 4 Circuit
P2314	Ignition Coil Secondary # 5 Circuit
P2317	Ignition Coil Secondary # 6 Circuit
P2320	Ignition Coil Secondary # 7 Circuit
P2323	Ignition Coil Secondary # 8 Circuit
P2503	Charging System Voltage Low	Charging system voltage below minimum acceptable voltage.

0010-0099	0100-0199	0200-0299	0300-0399	0400-0499	0500-0599
0600-0699	0700-0799	0800-0899	1100-1199	1200-1299	1300-1399
1400-1499	1500-1599	1600-1699	1700-1799	1800-1899	2000-2599

Special thanks to Ed at PT Do It Yourself.net for providing additional listings and information for this page.

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