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TroubleCodes (98 of 130)

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2.7L V6 - Auto



Trouble Code: P0262

Fuel Injector 1 Circuit High Input

Trouble Code Conditions: Engine running and the PCM detected the Injector 1 signal was in a high signal state (12 volts) with the injector commanded off in the test.

Possible Causes:



Fuel injector 1 control circuit is shorted to system power (B+)
 
Fuel injector 1 is damaged or has failed
 
Injector 1 "driver" circuit in the PCM is damaged or has failed
 

Trouble Code: P0264

Fuel Injector 2 Circuit Low Input

Trouble Code Conditions: Engine running and the PCM detected the Injector 2 signal was in a low signal state (0 volt) with the injector commanded off in the test.

Possible Causes:



Main relay power supply circuit to the injector is open
 
Fuel injector 2 control circuit is shorted to ground
 
Fuel injector 2 is damaged or has failed
 
Injector 2 "driver" circuit in the PCM is damaged or has failed
 

Trouble Code: P0265

Fuel Injector 2 Circuit High Input

Trouble Code Conditions: Engine running and the PCM detected the Injector 2 signal was in a high signal state (12 volts) with the injector commanded off in the test.

Possible Causes:



Fuel injector 2 control circuit is shorted to system power (B+)
 
Fuel injector 2 is damaged or has failed
 
Injector 2 "driver" circuit in the PCM is damaged or has failed
 

Trouble Code: P0267

Fuel Injector 3 Circuit Low Input

Trouble Code Conditions: Engine running and the PCM detected the Injector 3 signal was in a low signal state (0 volt) with the injector commanded off in the test.

Possible Causes:



Main relay power supply circuit to the injector is open
 
Fuel injector 3 control circuit is shorted to ground
 
Fuel injector 3 is damaged or has failed
 
Injector 3 "driver" circuit in the PCM is damaged or has failed
 

Trouble Code: P0268

Fuel Injector 3 Circuit High Input

Trouble Code Conditions: Engine running and the PCM detected the Injector 3 signal was in a high signal state (12 volts) with the injector commanded off in the test.

Possible Causes:



Fuel injector 3 control circuit is shorted to system power (B+)
 
Fuel injector 3 is damaged or has failed
 
Injector 3 "driver" circuit in the PCM is damaged or has failed
 

Trouble Code: P0270

Fuel Injector 4 Circuit Low Input

Trouble Code Conditions: Engine running and the PCM detected the Injector 4 signal was in a low signal state (0 volt) with the injector commanded off in the test.

Possible Causes:



Fuel injector 4 control circuit is shorted to system power (B+)
 
Fuel injector 4 is damaged or has failed
 
Injector 4 "driver" circuit in the PCM is damaged or has failed
 

Trouble Code: P0271

Fuel Injector 4 Circuit High Input

Trouble Code Conditions: Engine running and the PCM detected the Injector 4 signal was in a high signal state (12 volts) with the injector commanded off in the test.

Possible Causes:



Fuel injector 4 control circuit is shorted to system power (B+)
 
Fuel injector 4 is damaged or has failed
 
Injector 4 "driver" circuit in the PCM is damaged or has failed
 

Trouble Code: P0273

Cylinder 5- Injector Circuit Low

Trouble Code Conditions: The PCM sets the DTC if the control circuit is shorted to ground. Driver stage check.

Possible Causes:



Open in power supply harness
 
Short to ground in control harness
 
Contact resistance in connectors
 
Faulty injector
 

Trouble Code: P0274

Cylinder 5- Injector Circuit High

Trouble Code Conditions: The PCM sets the DTC if the control circuit is open or shorted to battery voltage. Driver stage check.

Possible Causes:



Open or short to battery control harness
 
Contact resistance in connectors
 
Faulty injector
 

Trouble Code: P0300

Random Cylinder Misfire Detected

Trouble Code Conditions: Engine runtime 3 seconds, engine speed change under 1200 rpm, and the PCM detected a random misfire condition in more than one cylinder during the 200 revolution or the 1000 revolution test range. Note: If the misfire is severe, the MIL will flash on/off on the 1st trip!

Possible Causes:



Vehicle driven under low fuel condition (less than 1/8 of a tank)
 
CKP or CMP sensor signal erratic or out of phase
 
Base engine problem affecting two or more engine cylinders
 
Ignition system problem affecting two or more engine cylinders
 

Trouble Code: P0301

Cylinder 1 Misfire Detected

Trouble Code Conditions: Engine runtime 3 seconds, engine speed change under 1200 rpm, and the PCM detected a misfire condition present in one cylinder during the 200 (Catalyst) or 1000 revolution (Emission) test range. Note: If the misfire is severe, the MIL will flash on/off on the 1st trip!

Possible Causes:



Fuel metering (fuel injector dirty) problem affecting Cylinder 1
 
Base engine (compression) problem affecting Cylinder 1
 
Ignition system (spark plug or plug wire) problem on Cylinder 1
 

Trouble Code: P0302

Cylinder 2 Misfire Detected

Trouble Code Conditions: Engine runtime 3 seconds, engine speed change under 1200 rpm, and the PCM detected a misfire condition present in one cylinder during the 200 (Catalyst) or 1000 revolution (Emission) test range. Note: If the misfire is severe, the MIL will flash on/off on the 1st trip!

Possible Causes:



Fuel metering (fuel injector dirty) problem affecting Cylinder 2
 
Base engine (compression) problem affecting Cylinder 2
 
Ignition system (spark plug or plug wire) problem on Cylinder 2
 

Trouble Code: P0303

Cylinder 3 Misfire Detected

Trouble Code Conditions: Engine runtime 3 seconds, engine speed change under 1200 rpm, and the PCM detected a misfire condition present in one cylinder during the 200 (Catalyst) or 1000 revolution (Emission) test range. Note: If the misfire is severe, the MIL will flash on/off on the 1st trip!

Possible Causes:



Fuel metering (fuel injector dirty) problem affecting Cylinder 3
 
Base engine (compression) problem affecting Cylinder 3
 
Ignition system (spark plug or plug wire) problem on Cylinder 3
 

Trouble Code: P0304

Cylinder 4 Misfire Detected

Trouble Code Conditions: Engine runtime 3 seconds, engine speed change under 1200 rpm, and the PCM detected a misfire condition present in one cylinder during the 200 (Catalyst) or 1000 revolution (Emission) test range. Note: If the misfire is severe, the MIL will flash on/off on the 1st trip!

Possible Causes:



Fuel metering (fuel injector dirty) problem affecting Cylinder 4
 
Base engine (compression) problem affecting Cylinder 4
 
Ignition system (spark plug or plug wire) problem on Cylinder 4
 

Trouble Code: P0305

Cylinder 5 Misfire Detected

Trouble Code Conditions: Engine runtime 3 seconds, engine speed change under 1200 rpm, and the PCM detected a misfire condition present in one cylinder during the 200 (Catalyst) or 1000 revolution (Emission) test range. Note: If the misfire is severe, the MIL will flash on/off on the 1st trip!

Possible Causes:



Fuel metering (fuel injector dirty) problem affecting Cylinder 5
 
Base engine (compression) problem affecting Cylinder 5
 
Ignition system (spark plug or plug wire) problem on Cylinder 5
 

Trouble Code: P0306

Cylinder 6 Misfire Detected

Trouble Code Conditions: Engine runtime 3 seconds, engine speed change under 1200 rpm, and the PCM detected a misfire condition present in one cylinder during the 200 (Catalyst) or 1000 revolution (Emission) test range. Note: If the misfire is severe, the MIL will flash on/off on the 1st trip!

Possible Causes:



Fuel metering (fuel injector dirty) problem affecting Cylinder 6
 
Base engine (compression) problem affecting Cylinder 6
 
Ignition system (spark plug or plug wire) problem on Cylinder 6
 

Trouble Code: P0315

Segment Time Acquisition Incorrect

Trouble Code Conditions: A misfire induces a decrease in the engine speed and causes a variation in the segment period. Monitor segment time adaptation.

Possible Causes:



Improperly installed target wheel
 
Contact resistance in connectors
 
Faulty PCM
 
Faulty CKPS
 

Trouble Code: P0320

Ignition Failure System Circuit Malfunction

Trouble Code Conditions: Engine running and the PCM detected an unexpected circuit condition on the Ignition Failure System circuit to the ignition coil.

Possible Causes:



IFS circuit to the PCM is open or shorted to ground
 
IFS ground circuit is open
 
IFS is damaged or has failed
 
PCM has failed
 

Trouble Code: P0325

Knock Sensor Circuit Malfunction (Bank 1)

Trouble Code Conditions: Engine running at over 1000 rpm for 5 seconds, and the PCM did not detect enough variation in the KS signals (e.g., 0.049 volt).

Possible Causes:



Knock sensor signal circuit open or shorted to ground
 
Knock sensor signal circuit shorted to VREF or system power
 
Knock sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0330

Knock Sensor Circuit Malfunction (Bank 2)

Trouble Code Conditions: Engine running at over 1000 rpm for 5 seconds, and the PCM did not detect enough variation in the KS signals (e.g., 0.049 volt).

Possible Causes:



Knock sensor signal circuit open or shorted to ground
 
Knock sensor signal circuit shorted to VREF or system power
 
Knock sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0335

Crankshaft Position Sensor Circuit Malfunction

Trouble Code Conditions: Engine cranking for 5 seconds, and the PCM did not detect any CKP sensor signals, or the vehicle was driven to a speed over 15.5 mph, and the PCM did not detect any CKP sensor signals for 5 seconds.

Possible Causes:



CKP sensor signal circuit open or shorted to ground
 
CKP sensor signal circuit shorted to VREF or system power
 
CKP sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0336

Crankshaft Position Sensor Performance

Trouble Code Conditions: Engine running and the PCM detected the number of CKP sensor signals counted (between the reference mark gap) did not equal the Actual number of available teeth (i.e., the CKP signals were out or the normal window" of operation with the CMP sensor signals okay).

Possible Causes:



CKP sensor signal circuit connections loose (intermittent fault)
 
CKP sensor wiring harness has a connection fault (intermittent)
 
CKP to Target Wheel "air gap" is incorrect
 
CKP sensor is damaged or has failed
 

Trouble Code: P0340

Camshaft Position Sensor Circuit Malfunction

Trouble Code Conditions: Engine speed over 600 rpm, and the PCM detected less than one CMP sensor signal was present, condition met for 1.5 seconds.

Possible Causes:



CMP sensor signal circuit is open or shorted to ground
 
CMP sensor signal circuit is shorted to VREF or system power
 
CMP sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0342

Camshaft Position Sensor Low Input

Trouble Code Conditions: Engine speed over 600 rpm, and the PCM detected an unexpected low voltage condition on the CMP sensor signal circuit.

Possible Causes:



CMP sensor signal circuit is open or shorted to ground
 
CMP sensor ground circuit is open
 
CMP sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0343

Camshaft Position Sensor High Input

Trouble Code Conditions: Engine cranking and the PCM detected the CMP sensor signal was above a threshold value stored in memory during the CCM test.

Possible Causes:



CMP sensor signal circuit is shorted to VREF or system power
 
CMP sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P0350

Ignition Coil Primary/Secondary Circuit Malfunction

Trouble Code Conditions: Engine started, engine running for 4 seconds, and the PCM detected an unexpected voltage condition either the ignition coil primary or on the ignition coil secondary circuit during the CCM test.

Possible Causes:



Ignition coil primary circuit open or shorted together
 
Ignition coil secondary components (coil or plug wires) arching
 
Ignition coil is damaged or has failed
 
PCM has failed
 

Trouble Code: P0351

Ignition Coil 'A' Circuit Malfunction

Trouble Code Conditions: Engine started, engine running, and the PCM detected an unexpected voltage condition on the Ignition Coil 'A' primary circuit.

Possible Causes:



Ignition Coil 'A' primary circuit is open or shorted to ground
 
Ignition Coil 'A' power circuit is open (test power from I/P fuse)
 
Ignition Coil 'A' is damaged or has failed
 
PCM has failed
 

Trouble Code: P0352

Ignition Coil 'B' Circuit Malfunction

Trouble Code Conditions: Engine started, engine running, and the PCM detected an unexpected voltage condition on the Ignition Coil 'B' primary circuit.

Possible Causes:



Ignition Coil 'B' primary circuit is open or shorted to ground
 
Ignition Coil 'B' power circuit is open (test power from I/P fuse)
 
Ignition Coil 'B' is damaged or has failed
 
PCM has failed
 

Trouble Code: P0353

Ignition Coil 'C' Circuit Malfunction

Trouble Code Conditions: Engine started, engine running, and the PCM detected an unexpected voltage condition on the Ignition Coil 'C' primary circuit.

Possible Causes:



Ignition Coil 'C' primary circuit is open or shorted to ground
 
Ignition Coil 'C' power circuit is open (test power from I/P fuse)
 
Ignition Coil 'C' is damaged or has failed
 
PCM has failed
 

Trouble Code: P0354

Ignition Coil 'D' Circuit Malfunction

Trouble Code Conditions: Engine started, engine running, and the PCM detected an unexpected voltage condition on the Ignition Coil 'D' primary circuit.

Possible Causes:



Ignition Coil 'D' primary circuit is open or shorted to ground
 
Ignition Coil 'D' power circuit is open (test power from I/P fuse)
 
Ignition Coil 'D' is damaged or has failed
 
PCM has failed
 

Trouble Code: P0355

Ignition Coil 'E' Circuit Malfunction

Trouble Code Conditions: Engine started, engine running, and the PCM detected an unexpected voltage condition on the Ignition Coil 'E' primary circuit.

Possible Causes:



Ignition Coil 'E' primary circuit is open or shorted to ground
 
Ignition Coil 'E' power circuit is open (test power from I/P fuse)
 
Ignition Coil 'E' is damaged or has failed
 
PCM has failed
 

Trouble Code: P0356

Ignition Coil 'F' Circuit Malfunction

Trouble Code Conditions: Engine started, engine running, and the PCM detected an unexpected voltage condition on the Ignition Coil 'F' primary circuit.

Possible Causes:



Ignition Coil 'F' primary circuit is open or shorted to ground
 
Ignition Coil 'F' power circuit is open (test power from I/P fuse)
 
Ignition Coil 'F' is damaged or has failed
 
PCM has failed
 

Trouble Code: P0401

Insufficient EGR System Flow Detected

Trouble Code Conditions: Engine started, engine speed from 1000-2000 rpm, ECT sensor more than 176ºF, closed throttle position switch indicating "on", EGR solenoid commanded open for 2 seconds, and the PCM detected too small an amount of change in EGR flow during the EGR test.

Possible Causes:



EGR valve or EGR differential pressure sensor is damaged
 
EGR solenoid valve is damaged or has failed
 
MAP sensor is damaged or out of calibration
 
Leaks or restrictions in these EGR components:
 

Trouble Code: P0403

EGR Solenoid Circuit Malfunction

Trouble Code Conditions: Engine started, system voltage more than 10.0 volts, and the PCM did not detect any solenoid surge voltage (system voltage +2 volts) when the EGR solenoid was cycled from "on" to "off" during the CCM test.

Possible Causes:



EGR solenoid control circuit open or shorted to ground
 
EGR solenoid control circuit shorted to VREF or system power
 
EGR solenoid is damaged or has failed
 
PCM has failed (the EGR solenoid driver may be open/shorted)
 

Trouble Code: P0420

Catalyst Efficiency Below Normal (Bank 1)

Trouble Code Conditions: DTC P0130, P0133, P0134, P0135, P0136, P0139, P0140 and P0141 not set, engine started, engine running in closed loop at a speed of 45-60 mph for 2-3 minutes, and the PCM detected that the rear HO2S and front HO2S voltage amplitudes were too similar.

Possible Causes:



Air leaks at the exhaust manifold or in the exhaust pipes
 
Catalytic converter is damaged or has failed
 
Front HO2S or rear HO2S is contaminated with fuel or moisture
 
Front HO2S or rear HO2S is contaminated with fuel or moisture
 

Trouble Code: P0421

Main Catalyst Efficiency Deterioration (Bank 1)

Trouble Code Conditions: DTC P0136, P0139 and P0140 not set, engine running at 3000 rpm or high in closed loop at 45-60 mph for 140 seconds, and the PCM detected the rear HO2S and front HO2S signals were too similar.

Possible Causes:



Air leaks at the exhaust manifold or in the exhaust pipes
 
Catalytic converter is damaged or has failed
 
Front HO2S or rear HO2S is contaminated with fuel or moisture
 
Front HO2S or rear HO2S heater is damaged or has failed
 
Front HO2S or rear HO2S is contaminated with fuel or moisture
 

Trouble Code: P0430

Catalyst Efficiency Below Normal (Bank 2)

Trouble Code Conditions: DTC P0150, P0153, P0154, P0155, P0156, P0160 and P0161 not set, engine started, engine running in closed loop at 45-60 mph for 2-3 minutes, and the PCM detected the rear HO2S and front HO2S voltage amplitudes were too similar during the Catalyst Monitor test.

Possible Causes:



Air leaks at the exhaust manifold or in the exhaust pipes
 
Catalytic converter is damaged or has failed
 
Front HO2S or rear HO2S is contaminated with fuel or moisture
 
Front HO2S or rear HO2S heater is damaged or has failed
 
Front HO2S or rear HO2S is contaminated with fuel or moisture
 

Trouble Code: P0431

Main Catalyst Efficiency Deterioration (Bank 2)

Trouble Code Conditions: DTC P0150, P0154, P0159, P0158, P0160 and P0161 not set, engine started, engine running at 3000 rpm or high in closed loop at 45-60 mph for 140 seconds, and the PCM detected the rear HO2S and front HO2S signals were too similar in the Catalyst Monitor test.

Possible Causes:



Air leaks at the exhaust manifold or in the exhaust pipes
 
Catalytic converter is damaged or has failed
 
Front HO2S or rear HO2S is contaminated with fuel or moisture
 
Front HO2S or rear HO2S heater is damaged or has failed
 
Front HO2S or rear HO2S is contaminated with fuel or moisture
 

Trouble Code: P0440

EVAP System Malfunction

Trouble Code Conditions: Engine started, ECT sensor signal less than158ºF at startup, IAT sensor signal more than 9.5ºF, system voltage over 10.0 volts engine runtime 15-20 minutes at cruise speed, then returned to idle speed, VSS indicating 0 mph, load value 2.2 ms, canister load factor less than 4.0, fuel tank pressure less than 0.5" Hg, then after the Idle Control system and Fuel Trim had stabilized, the PCM detected a fuel vapor leak (as small as 0.040") in the EVAP system during the EVAP Leak Test.

Possible Causes:



Fuel filler cap damaged, cross-threaded or loosely installed
 
Small hoses or cuts present in the EVAP vapor hoses/lines
 
EVAP purge valve is damaged or has failed
 

Trouble Code: P0441

EVAP System Malfunction

Trouble Code Conditions: ECT sensor signal less than158°F at startup, IAT sensor signal more than 9.05°F, system voltage more than 10.9 volts engine runtime 15-20 minutes at cruise speed, then returned to idle speed, VSS indicating 0 mph, load value 2.2 ms, canister load factor less than 4.0, fuel tank pressure less than 0.5" Hg, then after the Idle Control system and Fuel Trim stabilized, the PCM detected a continuous purge condition in the EVAP system during the Purge flow test.

Possible Causes:



Small hoses or cuts present in the EVAP vapor hoses/lines
 
EVAP canister purge solenoid is damaged or is stuck open
 
PCM has failed
 

 
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