Engine Performance DTCS

ENGINE PERFORMANCE DIAGNOSTIC TROUBLE CODE (DTC) LIST

DTC	DIAGNOSED CIRCUIT	CONDITION	ACTION
B1342	Control Module	Control module internal failure.	Replace the control module. See POWERTRAIN CONTROL MODULE (PCM) REMOVAL/INSTALLATION . NOTE: All vehicle preset parameters and applications must be reset after installing a new control module.
P0102	Mass Air Flow Sensor (MAF)	MAF signal went below 0.23 volts sometime during normal engine operation or KOER self-test.	See MASS AIR FLOW (MAF) SENSOR .
P0103	Mass Air Flow Sensor (MAF)	MAF signal went above 4.60 volts during KOEO or KOER self-test.	See MASS AIR FLOW (MAF) SENSOR .
P0107	Manifold Absolute Pressure (MAP Sensor)	MAP sensor operating voltage is less than 0.25 volts (VREF).	See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR MALFUNCTION (2.3L) .
P0108	Manifold Absolute Pressure (MAP Sensor)	MAP sensor operating voltage is greater than 5.0 volts (VREF).	See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR MALFUNCTION (2.3L) .
P0109	Manifold Absolute Pressure (MAP Sensor)	MAP sensor signal to the PCM is failing intermittently.	See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR MALFUNCTION (2.3L) .
P0112	Intake Air Temperature (IAT) Sensor	IAT signal is less than 0.2 volt (121°C {250° F}). IAT signal was not received during KOEO/KOER self-test, but was output during retrieve/clear continuous DTC self-test.	See INTAKE AIR TEMPERATURE (IAT) SENSOR AND ENGINE COOLANT TEMPERATURE (ECT)/CYLINDER HEAD TEMPERATURE (CHT) SENSOR .
P0113	Intake Air Temperature (IAT) Sensor	IAT signal is greater than 4.6 volts (-50°C[-58°F]) IAT signal not received during KOEO/KOER self-test, but was output during retrieve/clear continuous DTC self-test.	See INTAKE AIR TEMPERATURE (IAT) SENSOR AND ENGINE COOLANT TEMPERATURE (ECT)/CYLINDER HEAD TEMPERATURE (CHT) SENSOR .
P0117	Engine Coolant Temperature (ECT) Sensor	ECT signal is less than 0.2 volt(121°C [250 T]). ECT signal was not received during KOEO/KOER self-test, but was output during retrieve/clear continuous DTC self-test.	See INTAKE AIR TEMPERATURE (IAT) SENSOR AND ENGINE COOLANT TEMPERATURE (ECT)/CYLINDER HEAD TEMPERATURE (CHT) SENSOR .
P0118	Engine Coolant Temperature (ECT) Sensor	ECT signal is greater than 4.6 volts (-50°C[-58° F]).	See INTAKE AIR TEMPERATURE (IAT) SENSOR AND ENGINE COOLANT TEMPERATURE (ECT)/CYLINDER HEAD TEMPERATURE (CHT) SENSOR .
P0121	Throttle Position (TP) Sensor	Non-closed throttle position at idle.	See THROTTLE POSITION (TP) SENSOR CIRCUIT MALFUNCTION .
P0122	Throttle Position (TP) Sensor	TP signal is less than self-test minimum of 0.17 volt (3.42%).	See THROTTLE POSITION (TP) SENSOR CIRCUIT MALFUNCTION .
P0123	Throttle Position (TP) Sensor	TP signal is greater than self-test maximum of 4.6 volts (93%).	See THROTTLE POSITION (TP) SENSOR CIRCUIT MALFUNCTION .
P0125	Engine Coolant (ECT) Temperature Sensor	ECT signal has not achieved required temperature level to enter closed loop operating conditions within a specified amount of time after starting engine.	See INTAKE AIR TEMPERATURE (IAT) SENSOR AND ENGINE COOLANT TEMPERATURE (ECT)/CYLINDER HEAD TEMPERATURE (CHT) SENSOR .
P0131	Heated Oxygen Sensor (HO2S)-11	HO2S-11 (Front RH) generates a negative voltage.	See HEATED OXYGEN SENSOR (HO2S) .
P0133	Heated Oxygen Sensor (HO2S)-11	Response rate of HO2S-11 is below calibrated window.	See HEATED OXYGEN SENSORS (HO2S) - UPSTREAM .
P0135	HO2S HTR 11	HO2S-11 heater circuit is open, shorted to ground, shorted to VPWR, or has low or high current draw.	See HEATED OXYGEN SENSOR (HO2S) HEATER CIRCUIT .
P0136	Heated Oxygen Sensor (HO2S)-12	HO2S-12 output voltage fails to meet the calibrated limits (Bank 1).	See HEATED OXYGEN SENSOR (HO2S) .
P0141	HO2S HTR 12	HO2S-12 heater circuit is open, shorted to ground, shorted to VPWR, or has low or high current draw.	See HEATED OXYGEN SENSOR (HO2S) HEATER CIRCUIT .
P0151	Heated Oxygen Sensor (HO2S)-21	HO2S-21 (Front LH) generates a negative voltage.	See HEATED OXYGEN SENSOR (HO2S) .
P0153	Heated Oxygen Sensor (HO2S)-21	Response rate of HO2S-21 is below calibrated window.	See HEATED OXYGEN SENSORS (HO2S) - UPSTREAM .
P0155	HO2S HTR-21	HO2S-21 heater circuit is open, shorted to ground, shorted to VPWR, or has high low or high current draw.	See HEATED OXYGEN SENSOR (HO2S) HEATER CIRCUIT .
P0171	Adaptive Fuel Control	Fuel/air ratio is too lean (RH).	See ADAPTIVE FUEL CONTROL .
P0172	Adaptive Fuel Control	Fuel/air ratio is too rich (RH).	See ADAPTIVE FUEL CONTROL .
P0174	Adaptive Fuel Control	Fuel/air ratio is too lean (LH).	See ADAPTIVE FUEL CONTROL .
P0175	Adaptive Fuel Control	Fuel/air ratio is too rich (LH).	See ADAPTIVE FUEL CONTROL .
P0201	Fuel Injector Malfunction	Fuel Injector #1 does not operate electrically.	See FUEL INJECTOR MALFUNCTION .
P0202	Fuel Injector Malfunction	Fuel Injector #2 does not operate electrically.	See FUEL INJECTOR MALFUNCTION .
P0203	Fuel Injector Malfunction	Fuel Injector #3 does not operate electrically.	See FUEL INJECTOR MALFUNCTION .
P0204	Fuel Injector Malfunction	Fuel Injector #4 does not operate electrically.	See FUEL INJECTOR MALFUNCTION .
P0205	Fuel Injector Malfunction	Fuel Injector #5 does not operate electrically.	See FUEL INJECTOR MALFUNCTION .
P0206	Fuel Injector Malfunction	Fuel Injector #6 does not operate electrically.	See FUEL INJECTOR MALFUNCTION .
P0230	Fuel Pump Primary or Secondary Circuit	Excessive current draw is detected on the FP circuit or voltage is not detected on the FP circuit.	See FUEL PUMP (FP) PRIMARY OR SECONDARY CIRCUIT .
P0231	Fuel Pump Primary or Secondary Circuit	Powertrain control module (PCM) did not detect B+ voltage on the FPM circuit when the FP was commanded ON.	See FUEL PUMP (FP) PRIMARY OR SECONDARY CIRCUIT .
P0232	Fuel Pump Primary or Secondary Circuit	Powertrain control module (PCM) detected the FPM circuit voltage was high when the FP was commanded OFF.	See FUEL PUMP (FP) PRIMARY OR SECONDARY CIRCUIT .
P0300	Misfire Detection Monitor	Multiple cylinders misfiring, or cannot identify cylinder due to camshaft position sensor failure.	See MISFIRE DETECTION MONITOR .
P0301	Misfire Detection Monitor	Cylinder #1 misfiring.	See MISFIRE DETECTION MONITOR .
P0302	Misfire Detection Monitor	Cylinder #2 misfiring.	See MISFIRE DETECTION MONITOR .
P0303	Misfire Detection Monitor	Cylinder #3 misfiring.	See MISFIRE DETECTION MONITOR .
P0304	Misfire Detection Monitor	Cylinder #4 misfiring.	See MISFIRE DETECTION MONITOR .
P0305	Misfire Detection Monitor	Cylinder #5 misfiring.	See MISFIRE DETECTION MONITOR .
P0306	Misfire Detection Monitor	Cylinder #6 misfiring.	See MISFIRE DETECTION MONITOR .
P0316	Misfire Occurred in the First 1000 Engine Revolutions	Damaged crankshaft position (CKP) sensor. Ignition system. Fuel injectors. Running out of fuel. Fuel quality. Base engine. Damaged powertrain control module (PCM).	See MISFIRE DETECTION MONITOR .
P0320	Crankshaft position (CKP) sensor	Erratic profile ignition pickup (PIP) signal.	See CRANKSHAFT POSITION (CKP) SENSOR MALFUNCTION .
P0325	Knock Sensor	Knock sensor circuit malfunction.	See KNOCKING/PINGING .
P0326	Knock Sensor	Knock sensor has detected vibrations upon an increase and decrease in engine RPM that is outside a calibrated limit.	See KNOCKING/PINGING .
P0340	Camshaft Position (CMP) Sensor	CMP sensor circuit failure.	See CAMSHAFT POSITION (CMP) SENSOR MALFUNCTION .
P0350	Ignition Coil	Ignition coil primary/secondary circuit malfunction.	See IGNITION COIL PRIMARY CIRCUIT MALFUNCTION .
P0351	Ignition Coil	Ignition coil A primary circuit malfunction.	See INTEGRATED IGNITION COIL 1, 2, 3, OR 4 FAILURE .
P0352	Ignition Coil	Ignition coil B primary circuit malfunction.	See INTEGRATED IGNITION COIL 1, 2, 3, OR 4 FAILURE .
P0353	Ignition Coil	Ignition coil C primary circuit malfunction.	See INTEGRATED IGNITION COIL 1, 2, 3, OR 4 FAILURE .
P0354	Ignition Coil	Ignition coil D primary circuit malfunction.	See INTEGRATED IGNITION COIL 1, 2, 3, OR 4 FAILURE .
P0400	Electric Exhaust Gas Recirculation (EEGR) System	EGR flow is less than expected by PCM calculations.	See ELECTRIC EGR (EEGR) SYSTEM MALFUNCTION - 2.3L .
P0403	Electric Exhaust Gas Recirculation (EEGR) System	Electric motor windings or circuits to the powertrain control module (PCM) are shorted or open.	See ELECTRIC EGR (EEGR) SYSTEM MALFUNCTION - 2.3L .
P0420	Catalyst Efficiency Monitor	Bank 1 catalyst system efficiency is below acceptable threshold.	See CATALYST EFFICIENCY MONITOR MALFUNCTION .
P0430	Catalyst Efficiency Monitor	Bank 2 catalyst system efficiency is below acceptable threshold.	See CATALYST EFFICIENCY MONITOR MALFUNCTION .
P0442	Evaporative Emission (EVAP) System	A small leak has been detected in the EVAP system.	See EVAPORATIVE EMISSION (EVAP) MONITOR AND SYSTEM MALFUNCTION .
P0443	EVAP Purge Solenoid	Signal moved outside the minimum or maximum allowable calibrated parameters for a specified purge duty cycle by powertrain control module (PCM) command.	See EVAPORATIVE EMISSION (EVAP) CANISTER PURGE SOLENOID MALFUNCTION .
P0451	Evaporative Emission (EVAP) System	Fuel tank pressure changes greater than 14 in-H2O in 0.10 seconds.	See EVAP SYSTEM MALFUNCTION .
P0452	Fuel Tank Pressure (FTP) Sensor	FTP circuit input below minimum.	See FUEL TANK PRESSURE (FTP) SENSOR MALFUNCTION .
P0453	Fuel Tank Pressure (FTP) Sensor	FTP circuit input above maximum.	See FUEL TANK PRESSURE (FTP) SENSOR MALFUNCTION .
P0455	Evaporative Emission (EVAP) System	A substantial leak or blockage has been detected in the EVAP system.	See EVAPORATIVE EMISSION (EVAP) SYSTEM MALFUNCTION .
P0456	Evaporative Emission (EVAP) System	Small leaks.	See EVAPORATIVE EMISSION (EVAP) SYSTEM MALFUNCTION .
P0457	Evaporative Emission (EVAP) System	Initial vacuum could not be achieved after a refueling event and the purge vapor flow is excessive.	See EVAPORATIVE EMISSION (EVAP) SYSTEM MALFUNCTION .
P0460	Fuel Level Input (FLI)	FLI circuit malfunction due to a low or high FLI input to the PCM, or a mechanically stuck fuel pump (FP) module.	See FUEL LEVEL INPUT (FLI) CIRCUIT MALFUNCTION .
P0461	Evaporative Emission (EVAP) System	Fuel level input noisy.	See EVAP SYSTEM MALFUNCTION .
P0505	Idle Air Control (IAC) system	Desired RPM could not be reached or controlled during KOEO self-test.	See IDLE AIR CONTROL (IAC) VALVE ASSEMBLY MALFUNCTION .
P0603	Powertrain Control Module (PCM)	PCM has experienced a power interrupt in keep alive power (KAPWR) circuit.	See POWERTRAIN CONTROL MODULE (PCM) MALFUNCTION .
P0605	Powertrain Control Module (PCM) Read only memory (ROM) test error.	Replace PCM.	See POWERTRAIN CONTROL MODULE (PCM) REMOVAL/INSTALLATION .
P0703	Brake Pedal Position (BPP) Switch	Powertrain control module (PCM) did not receive a BPP input.	See BRAKE PEDAL POSITION (BPP) SWITCH MALFUNCTION .
P0704	Clutch Pedal Position (CPP) Switch	CPP switch is malfunctioning.	See CLUTCH PEDAL POSITION (CPP) SWITCH MALFUNCTION .
P0705	Transmission Range (TR) Sensor	Digital TR circuit failure.	See DIGITAL TRANSMISSION RANGE (TR) AND SENSOR .
P0708	Transmission Range (TR) Sensor	Digital TR sensor circuit TR3A open.	See DIGITAL TRANSMISSION RANGE (TR) AND SENSOR .
P0712	Transmission Fluid Temperature (TFT) Sensor	TFT signal exceeds scale set for temperature of 157°C (315°F).	See TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR 5R44E AND 5R55E ONLY .
P0713	Transmission Fluid Temperature (TFT) Sensor	TFT signal exceeds scale set for temperature of -40°C (-40T).	See TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR 5R44E AND 5R55E ONLY .
P0715	Turbine Shaft Speed (TSS) Sensor	Powertrain control module (PCM) detected a loss of TSS signal during operation.	See TURBINE SHAFT SPEED (TSS), INPUT SHAFT SPEED (ISS) AND OUTPUT SHAFT SPEED (OSS) SENSORS 5R44E AND 5R55E ONLY .
P0720	Output Shaft Speed (OSS) Sensor	Powertrain control module (PCM) detected a loss of OSS signal during operation.	See TURBINE SHAFT SPEED (TSS), INPUT SHAFT SPEED (ISS) AND OUTPUT SHAFT SPEED (OSS) SENSORS 5R44E AND 5R55E ONLY .
P0721	Output Shaft Speed (OSS) Sensor	Powertrain control module (PCM) detected an erratic OSS signal.	See TURBINE SHAFT SPEED (TSS), INPUT SHAFT SPEED (ISS) AND OUTPUT SHAFT SPEED (OSS) SENSORS 5R44E AND 5R55E ONLY .
P0731	AT Solenoid	First gear error.	See SHIFT SOLENOIDS SS1, SS2, SS3, SS4 AND TORQUE CONVERTER CLUTCH (TCC) SOLENOID 5R44E AND 5R55E ONLY .
P0732	AT Solenoid	Second gear error.	See SHIFT SOLENOIDS SS1, SS2, SS3, SS4 AND TORQUE CONVERTER CLUTCH (TCC) SOLENOID 5R44E AND 5R55E ONLY .
P0733	AT Solenoid	Third gear error.	See SHIFT SOLENOIDS SS1, SS2, SS3, SS4 AND TORQUE CONVERTER CLUTCH (TCC) SOLENOID 5R44E AND 5R55E ONLY .
P0734	AT Solenoid	Fourth gear error.	See SHIFT SOLENOIDS SS1, SS2, SS3, SS4 AND TORQUE CONVERTER CLUTCH (TCC) SOLENOID 5R44E AND 5R55E ONLY .
P0735	AT Solenoid	Fifth gear error.	See SHIFT SOLENOIDS SS1, SS2, SS3, SS4 AND TORQUE CONVERTER CLUTCH (TCC) SOLENOID 5R44E AND 5R55E ONLY .
P0750	Shift Solenoid 1 (SS1)	SS1 solenoid circuit failure.	See SHIFT SOLENOIDS SS1, SS2, SS3, SS4 AND TORQUE CONVERTER CLUTCH (TCC) SOLENOID 5R44E AND 5R55E ONLY .
P0751	Shift Solenoid 1 (SS1)	SS1 function failure.	See SHIFT SOLENOIDS SS1, SS2, SS3, SS4 AND TORQUE CONVERTER CLUTCH (TCC) SOLENOID 5R44E AND 5R55E ONLY .
P0755	Shift Solenoid 2 (SS2)	SS2 solenoid circuit failure.	See SHIFT SOLENOIDS SS1, SS2, SS3, SS4 AND TORQUE CONVERTER CLUTCH (TCC) SOLENOID 5R44E AND 5R55E ONLY .
P0756	Shift Solenoid 2 (SS2)	SS2 function failure.	See SHIFT SOLENOIDS SS1, SS2, SS3, SS4 AND TORQUE CONVERTER CLUTCH (TCC) SOLENOID 5R44E AND 5R55E ONLY .
P0760	Shift Solenoid 3 (SS3)	SS3 solenoid circuit failure.	See SHIFT SOLENOIDS SS1, SS2, SS3, SS4 AND TORQUE CONVERTER CLUTCH (TCC) SOLENOID 5R44E AND 5R55E ONLY .
P0761	Shift Solenoid 3 (SS3)	SS3 function failure.	See SHIFT SOLENOIDS SS1, SS2, SS3, SS4 AND TORQUE CONVERTER CLUTCH (TCC) SOLENOID 5R44E AND 5R55E ONLY .
P0765	Shift Solenoid 4 (SS4)	SS4 solenoid circuit failure.	See SHIFT SOLENOIDS SS1, SS2, SS3, SS4 AND TORQUE CONVERTER CLUTCH (TCC) SOLENOID 5R44E AND 5R55E ONLY .
P0791	INPUT SHAFT SPEED (ISS) SENSOR	Powertrain control module (PCM) detected ISS sensor signal failure.	See TURBINE SHAFT SPEED (TSS), INPUT SHAFT SPEED (ISS) AND OUTPUT SHAFT SPEED (OSS) SENSORS 5R44E AND 5R55E ONLY .
P0794	INPUT SHAFT SPEED (ISS) SENSOR	Powertrain control module (PCM) detected an intermittent ISS sensor signal.	See TURBINE SHAFT SPEED (TSS), INPUT SHAFT SPEED (ISS) AND OUTPUT SHAFT SPEED (OSS) SENSORS 5R44E AND 5R55E ONLY .
P1000	OBD II Drive Cycle	OBD II monitor testing not complete.	See OBDII DRIVE CYCLE MALFUNCTION
P1001	Data Link Connector (DLC)	KOER self-test cannot be completed. DTC displayed by WDS or equivalent tester not listed. WDS or equivalent tester communication problem. Unable to activate KOEO or KOER self-test. Unable to access continuous memory DTCs.	See DATA LINK CONNECTOR (DLC) MALFUNCTION .
P1100	Mass Air Flow Sensor (MAF)	MAF signal went below 0.23 volt or above 4.60 volts sometime during the last 40 warm-up cycles.	See MASS AIR FLOW (MAF) SENSOR
P1101	Mass Air Flow Sensor (MAF)	MAF signal was greater than 0.27 volt during KOEO self-test or MAF signal was not between 0.46-2.44 volts during KOER self-test.	See MASS AIR FLOW (MAF) SENSOR .
P1112	Intake Air Temperature (IAT) Sensor	IAT signal was intermittent during the comprehensive component monitor (CCM).	See INTAKE AIR TEMPERATURE (IAT) SENSOR AND ENGINE COOLANT TEMPERATURE (ECT)/CYLINDER HEAD TEMPERATURE (CHT) SENSOR .
P1116	Engine Coolant Temperature (ECT) Sensor	ECT signal went below 0.3 volt or above 3.7 volts during KOEO or KOER self-test.	See INTAKE AIR TEMPERATURE (IAT) SENSOR AND ENGINE COOLANT TEMPERATURE (ECT)/CYLINDER HEAD TEMPERATURE (CHT) SENSOR .
P1117	Engine Coolant Temperature (ECT) Sensor	ECT circuit was intermittently open or shorted while engine was running.	See INTAKE AIR TEMPERATURE (IAT) SENSOR AND ENGINE COOLANT TEMPERATURE (ECT)/CYLINDER HEAD TEMPERATURE (CHT) SENSOR .
P1120	Throttle Position (TP) Sensor	TP signal falls between 0.17 and 0.49 volts (3.42 and 9.85%) which is below the closed throttle position range.	See THROTTLE POSITION (TP) SENSOR CIRCUIT MALFUNCTION .
P1121	Throttle Position (TP) Sensor	TP signal inconsistent with MAF sensor signal.	See THROTTLE POSITION (TP) SENSOR CIRCUIT MALFUNCTION .
P1124	Throttle Position (TP) Sensor	TP rotational setting and signal are not in self-test range of 0.66 to 1.17 volts (13.27 to 23.52%).	See THROTTLE POSITION (TP) SENSOR CIRCUIT MALFUNCTION .
P1125	Throttle Position (TP) Sensor	TP signal went below 0.49 volt or above 4.65 volts sometime during the last 80 warm-up cycles.	See THROTTLE POSITION (TP) SENSOR CIRCUIT MALFUNCTION .
P1127	Heated Oxygen Sensor (HO2S)-12	Inferred exhaust temperature to determine when HO2S heaters are cycled on below a minimum calibrated limit.	See FUEL INJECTOR MALFUNCTION .
P1128	Heated Oxygen Sensor (HO2S)	Front HO2S signal(s) response for a fuel shift to the correct engine bank was not indicated.	See HEATED OXYGEN SENSOR HO2S SIGNALS (V6 ONLY) .
P1130	Heated Oxygen Sensor (HO2S)-11	HO2S-11 (front RH) fails to switch due to circuit or fuel at or exceeding a calibrated limit.	See FUEL SYSTEM NOT SWITCHING AT FUEL TRIM (RICH OR LEAN) .
P1131	Heated Oxygen Sensor (HO2S)-11	HO2S sensor is indicating lean at the end of the test trying to correct for an over-rich condition (Bank 1) and a switch is not detected for a calibrated amount of time.	See HEATED OXYGEN SENSOR (HO2S) NOT SWITCHING - UPSTREAM .
P1132	Heated Oxygen Sensor (HO2S)-11	HO2S sensor is indicating rich at the end of the test trying to correct for an over-lean condition (Bank 1) and a switch is not detected for a calibrated amount of time.	See HEATED OXYGEN SENSOR (HO2S) NOT SWITCHING - UPSTREAM .
P1137	Heated Oxygen Sensor (HO2S)-12	Powertrain control module (PCM) does not detect rich signal during KOER self-test.	See HEATED OXYGEN SENSOR (HO2S) .
P1138	Heated Oxygen Sensor (HO2S)-12	Powertrain control module (PCM) does not detect lean signal during KOER self-test.	See HEATED OXYGEN SENSOR (HO2S) .
P1150	Heated Oxygen Sensor (HO2S)-21	HO2S-21 (Front LH) fails to switch due to circuit or fuel at/or exceeding a calibrated limit.	See FUEL SYSTEM NOT SWITCHING AT FUEL TRIM (RICH OR LEAN) .
P1151	Heated Oxygen Sensor (HO2S)-21	HO2S sensor is indicating lean at the end of the test trying to correct for an over-rich condition (Bank 2) and a switch is not detected for a calibrated amount of time.	See HEATED OXYGEN SENSOR (HO2S) NOT SWITCHING - UPSTREAM .
P1152	Heated Oxygen Sensor (HO2S)-21	HO2S sensor is indicating rich at the end of the test trying to correct for an over-lean condition (Bank 2) and a switch is not detected for a calibrated amount of time.	See HEATED OXYGEN SENSOR (HO2S) NOT SWITCHING - UPSTREAM .
P1270	Engine RPM/Vehicle Speed Limiter	Vehicle operated in a manner which caused the engine or vehicle to exceed a calibrated limit.	See ENGINE RPM/VEHICLE SPEED LIMITER .
P1285	Cylinder Head Temperature (CHT) Sensor	Overheating condition was sensed by the CHT sensor.	See SYMPTOM TROUBLESHOOTING CHART - ENGINE COOLING . See INTAKE AIR TEMPERATURE (IAT) SENSOR AND ENGINE COOLANT TEMPERATURE (ECT)/CYLINDER HEAD TEMPERATURE (CHT) SENSOR .
P1288	Cylinder Head Temperature (CHT) Sensor	The CHT sensor is out of self-test range (engine not at operating temperature).	See INTAKE AIR TEMPERATURE (IAT) SENSOR AND ENGINE COOLANT TEMPERATURE (ECT)/CYLINDER HEAD TEMPERATURE (CHT) SENSOR .
P1289	Cylinder Head Temperature (CHT) Sensor	CHT sensor circuit malfunction.	See INTAKE AIR TEMPERATURE (IAT) SENSOR AND ENGINE COOLANT TEMPERATURE (ECT)/CYLINDER HEAD TEMPERATURE (CHT) SENSOR .
P1290	Cylinder Head Temperature (CHT) Sensor	CHT sensor circuit malfunction.	See INTAKE AIR TEMPERATURE (IAT) SENSOR AND ENGINE COOLANT TEMPERATURE (ECT)/CYLINDER HEAD TEMPERATURE (CHT) SENSOR .
P1299	Cylinder Head Temperature (CHT) Sensor	Overheating condition was detected by the CHT sensor and an FMEM strategy (fail safe cooling was activated to cool the engine.	See INTAKE AIR TEMPERATURE (IAT) SENSOR AND ENGINE COOLANT TEMPERATURE (ECT)/CYLINDER HEAD TEMPERATURE (CHT) SENSOR .
P1309	Misfire Detection Monitor	misfire detection monitor is disabled.	See MISFIRE DETECTION MONITOR DISABLED .
P1408	EGR System	EGR flow is less than required calibrated limit.	See ELECTRIC EGR (EEGR) SYSTEM MALFUNCTION - 2.3L .
P1443	EVAP	A substantial leak and no purge flow has been detected in the EVAP system.	See EVAPORATIVE EMISSION (EVAP) MONITOR AND SYSTEM .
P1450	EVAP	Self-test has detected the EVAP system is unable to bleed up fuel tank vacuum.	See EVAPORATIVE EMISSION (EVAP) MONITOR AND SYSTEM .
P1451	Canister Vent (CV) Solenoid	Self-test has detected a CV solenoid circuit failure.	See CANISTER VENT (CV) SOLENOID MALFUNCTION .
P1460	A/C Clutch Relay (ACCR)	Excessive current draw is detected on the ACCR circuit when the powertrain control module (PCM) grounds the circuit or voltage is not detected on the ACCR circuit when the circuit is not grounded by the PCM.	See A/C CLUTCH RELAY (ACCR) MALFUNCTION .
P1464	A/C Circuits (ACCS)	ACCS input to PCM was high during self-test.	See A/C CONTROL SIGNAL (ACCS) MALFUNCTION .
P1474	Cooling Fan	Excessive current draw or no voltage detected on speed fan control circuit.	See COOLING FAN MALFUNCTION (2.3L) .
P1504	Idle Air Control (IAC) Solenoid	Electrical load failure on IAC output circuit.	See IDLE AIR CONTROL (IAC) VALVE ASSEMBLY MALFUNCTION .
P1506	Idle Air Control (IAC) Solenoid	PCM detected an engine idle speed greater than the desired RPM.	See IDLE AIR CONTROL (IAC) SYSTEM MALFUNCTION .
P1507	Idle Air Control (IAC) Solenoid	Engine idle speed less than the desired RPM.	See IDLE AIR CONTROL (IAC) VALVE ASSEMBLY MALFUNCTION .
P1633	Powertrain Control Module (PCM)	PCM has experienced a power interrupt in keep alive power (KAPWR) circuit.	See POWERTRAIN CONTROL MODULE (PCM) MALFUNCTION .
P1639	Powertrain Control Module (PCM)	PCM programmable parameters are corrupted or not programmed correctly.	See POWERTRAIN CONTROL MODULE (PCM) MALFUNCTION .
P1650	Power Steering Pressure (PSP) Switch	PSP signal is out of self-test range.	See POWER STEERING PRESSURE (PSP) SWITCH (2.3L ONLY) MALFUNCTION .
P1651	Power Steering Pressure (PSP) Switch	PSP signal is open or shorted.	See POWER STEERING PRESSURE (PSP) SWITCH (2.3L ONLY) MALFUNCTION .
P1702	Transmission Range (TR) Sensor	Digital TR signal intermittent.	See DIGITAL TRANSMISSION RANGE (TR) AND SENSOR .
P1703	Brake Pedal Position (BPP) Switch	BPP signal was high (KOEO) or BPP signal did not cycle high or low.	See BRAKE PEDAL POSITION (BPP) SWITCH MALFUNCTION .
P1704	Transmission Range (TR) Sensor	Digital TR circuits reading in-between gear positions during KOEO/KOER.	See DIGITAL TRANSMISSION RANGE (TR) AND SENSOR .
P1705	Transmission Range (TR) Sensor	TR signal is not in PARK during KOEO Self Test.	See DIGITAL TRANSMISSION RANGE (TR) AND SENSOR .
P1709	Clutch Pedal Position (CPP) Switch	Voltage is high or CPP is open when voltage should be low or switch should be closed grounding the circuit.	See CLUTCH PEDAL POSITION (CPP) SWITCH MALFUNCTION .
P1711	Transmission Fluid Temperature (TFT) Sensor	TFT out of on-board diagnostic range.	See TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR 5R44E AND 5R55E ONLY .
P1714	Shift Solenoid 1 (SS1)	SS1 malfunction.	See SOLENOID MECHANICAL FAILURE 5R44E AND 5R55E ONLY .
P1715	Shift Solenoid 2 (SS2)	SS2 malfunction.	See SOLENOID MECHANICAL FAILURE 5R44E AND 5R55E ONLY .
P1716	Shift Solenoid 3 (SS3)	SS3 malfunction (mechanical failure).	See SOLENOID MECHANICAL FAILURE 5R44E AND 5R55E ONLY .
P1717	Shift Solenoid 4 (SS4)	SS4 malfunction.	See SOLENOID MECHANICAL FAILURE 5R44E AND 5R55E ONLY .
P1718	Transmission Fluid Temperature (TFT) Sensor	Powertrain control module (PCM) has detected no TFT change at low range during operation.	See TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR 5R44E AND 5R55E ONLY .
P1729	4x4 Low Switch	4x4 Shift Control switch failure (either open or shorted).	See TRANSFER CASE RANGE MALFUNCTION - 4X4 LOW (4X4L) .
P1740	Torque Converter Clutch (TCC) Solenoid	TCC malfunction.	See SOLENOID MECHANICAL FAILURE 5R44E AND 5R55E ONLY .
P1746	Electronic Pressure Control (EPC) Solenoid	EPC circuit open.	See ELECTRONIC PRESSURE CONTROL (EPC) SOLENOID 5R44E AND 5R55E ONLY .
P1747	Electronic Pressure Control (EPC) Solenoid	EPC circuit shorted.	See ELECTRONIC PRESSURE CONTROL (EPC) SOLENOID 5R44E AND 5R55E ONLY .
P1780	Transmission Control Switch (TCS)	TCS was not cycled during KOER self-test.	See TRANSMISSION CONTROL SWITCH (TCS) OR TRANSMISSION CONTROL INDICATOR LAMP (TCIL) CIRCUIT MALFUNCTION .
P1781	4x4 Low SW	4x4L position (closed) during KOEO self-test.	See TRANSFER CASE RANGE MALFUNCTION - 4X4 LOW (4X4L) .
P1783	Transmission	Transmission over temperature condition.	See TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR 5R44E AND 5R55E ONLY .
P18##	Transfer case. Four-Wheel Drive Indicator Light. Air bag (SRS). Window Wiper.	See .	See DTC INDEX -- 4X4 . See DTC INDEX - RESTRAINTS CONTROL MODULE (RCM) . See DTC INDEX - WIPER AND WASHER .
P1900	Turbine Speed Sensor (TSS)	Powertrain control module (PCM) has detected an intermittent OSS signal.	See TURBINE SHAFT SPEED (TSS), INPUT SHAFT SPEED (ISS) AND OUTPUT SHAFT SPEED (OSS) SENSORS 5R44E AND 5R55E ONLY .
U1020	Data Circuit	SCP Invalid or Missing Data for Air Conditioning Clutch.	See SYMPTOM TROUBLESHOOTING CHART - CLIMATE CONTROL .
U1039	Data Circuit	SCP Invalid or Missing Data for Vehicle Speed.	See SYMPTOM TROUBLESHOOTING CHART - COMMUNICATIONS NETWORK .
U1041	Data Circuit	SCP Invalid or Missing Data for Vehicle Speed.	See SYMPTOM TROUBLESHOOTING CHART - COMMUNICATIONS NETWORK .
U1051	Data Circuit	SCP Invalid or Missing Data for Brakes.	See SYMPTOM TROUBLESHOOTING CHART - HEADLAMPS .
U1131	Data Circuit	SCP Invalid or Missing Data for Fuel System.	See INSTRUMENT CLUSTER DIAGNOSIS .
U1451	Data Circuit	SCP Invalid or Missing Data for Anti-Theft Module.	See .
U1262	Data Circuit	SCP Communication Bus Fault - Perform Network Communications Test.	See COMMUNICATIONS NETWORK DIAGNOSIS .
U2243	Data Circuit	SCP Invalid or Missing Data for Exterior Environment.	See COMMUNICATIONS NETWORK DIAGNOSIS .
UXXXX	Data Circuit	"U" DTCs received during self-test of another module.	See ON - BOARD DIAGNOSTIC TESTS .