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TroubleCodes (91 of 130)

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2.5L V6 - Auto



Trouble Code: P0765

TCM Overdrive Solenoid Circuit Malfunction

Trouble Code Conditions: Engine running in gear, VSS inputs received, and PCM detected an unexpected voltage condition on the O/D valve circuit during the test.

Possible Causes:



O/D solenoid control circuit open or shorted to ground
 
O/D solenoid control circuit shorted to system power (B+)
 
O/D solenoid valve is damaged or has failed
 
PCM or TCM has failed
 

Trouble Code: P1115

HO2S-12 (Bank 1 Sensor 2) Heater Circuit Low Input

Trouble Code Conditions: Engine running, and PCM detected an unexpected voltage condition on the rear HO2S heater control circuit. Note: Inspect the HO2S connector for oil and water contamination.

Possible Causes:



HO2S heater control circuit open between HO2S and the PCM
 
HO2S heater control circuit is shorted to ground
 
HO2S heater is damaged or has failed
 
PCM has failed
 

Trouble Code: P1440

EVAP Canister Control System Vent Circuit Malfunction

Trouble Code Conditions: Engine running and the PCM detected an unexpected voltage condition on the Canister Control Vent solenoid during the CCM test.

Possible Causes:



Canister control vent valve stuck in closed position
 
Canister control vent solenoid is open or shorted to ground
 
Canister control vent solenoid is shorted to system power (B+)
 
Canister control vent solenoid is damaged or has failed
 
PCM has failed (vent solenoid driver circuit is open or shorted)
 

Trouble Code: P1500

Vehicle Speed Sensor Performance

Trouble Code Conditions: Engine running OSS signal over 775 rpm, L4 switch indicating "off", and the PCM did not detect any VSS signals during the CCM test.

Possible Causes:



Vehicle speed sensor circuit to the Meter Fuse is open
 
VSS signal ground circuit is open
 
VSS signal circuit is open or shorted to ground
 
VSS signal circuit is shorted to VREF or system power (B+)
 
VSS is damaged or failed, or the speedometer is damaged
 
TSB 2TD004 (8/00) contains information related to this code
 

Trouble Code: P1505

IAC Valve Opening Coil Signal Low

Trouble Code Conditions: Engine runtime over 5 seconds, and the PCM detected the IAC Valve Opening Coil signal remained in a low state during the test.

Possible Causes:



IAC valve control signal is open
 
IAC valve control signal is shorted to ground
 
IAC valve is damaged or has failed
 
PCM has failed (IAC "driver" circuit may be open in the PCM)
 

Trouble Code: P1506

IAC Valve Opening Coil Signal High

Trouble Code Conditions: Engine runtime over 5 seconds, and the PCM detected the IAC Valve Opening Coil signal remained in a high state during the test.

Possible Causes:



IAC valve control signal is shorted to system power (B+)
 
IAC valve is damaged or has failed
 
PCM has failed (IAC "driver" circuit may be shorted in the PCM)
 

Trouble Code: P1507

IAC Valve Closing Coil Signal Low

Trouble Code Conditions: Engine runtime over 5 seconds, and the PCM detected the IAC Valve Closing Coil signal remained in a low state during the test.

Possible Causes:



IAC valve control signal is open
 
IAC valve control signal is shorted to ground
 
IAC valve is damaged or has failed
 
PCM has failed (IAC "driver" circuit may be open in the PCM)
 

Trouble Code: P1508

IAC Valve Closing Coil Signal High

Trouble Code Conditions: Engine runtime over 5 seconds, and the PCM detected the IAC Valve Closing Coil signal remained in a high state during the test.

Possible Causes:



IAC valve control signal is shorted to system power (B+)
 
IAC valve is damaged or has failed
 
PCM has failed (IAC "driver" circuit may be shorted in the PCM)
 

Trouble Code: P1510

Idle Charge Actuator Signal Incorrect (Coil 1)

Trouble Code Conditions: Engine running and the PCM detected an unexpected voltage condition on the Idle Charge Actuator control circuit during the test.

Possible Causes:



Idle charge actuator control signal is open
 
Idle charge actuator control signal is shorted to ground
 
Idle charge actuator control signal is shorted to system power
 
Idle charge actuator is damaged or has failed
 
PCM has failed (the "driver" circuit may be open in the PCM)
 

Trouble Code: P1511

Idle Charge Actuator Signal Incorrect (Coil 2)

Trouble Code Conditions: Engine running and the PCM detected an unexpected voltage condition on the IAC Valve Closing Coil circuit during the test.

Possible Causes:



Idle charge actuator control signal is open
 
Idle charge actuator control signal is shorted to ground
 
Idle charge actuator control signal is shorted to system power
 
Idle charge actuator is damaged or has failed
 
PCM has failed (the "driver" circuit may be open in the PCM)
 

Trouble Code: P1602

Serial Communication Problem With TCM

Trouble Code Conditions: Key on or engine running, and the PCM detected problem when it tried to communicate with the TCM over the CAN network (time out).

Possible Causes:



PCM to TCM serial communication circuit is open
 
PCM to TCM serial communication circuit is shorted to ground
 
PCM to TCM serial communication circuit is shorted to power
 
TCM has failed
 

Trouble Code: P1606

Chassis Accelerator Sensor Signal Performance

Trouble Code Conditions: Engine running and the PCM detected an unexpected voltage condition on the Chassis Accelerator sensor circuit during the test.

Possible Causes:



Chassis acceleration sensor signal circuit is open
 
Chassis acceleration sensor signal circuit is shorted to ground
 
Chassis acceleration sensor signal circuit is shorted to power
 
Chassis acceleration sensor is damaged or has failed
 
PCM has failed
 

Trouble Code: P1613

Engine Control Unit Self-Test Failed

Trouble Code Conditions: Key on, and the PCM detected that it failed an internal self-test.

Possible Causes:



PCM (ECU) has failed (it must be replaced to repair this fault)
 

Trouble Code: P1616

Main Relay Malfunction

Trouble Code Conditions: Key on, and the PCM detected an unexpected voltage condition on the Main Relay control circuit during the CCM test.

Possible Causes:



Main relay control circuit is open or shorted to ground
 
Main relay power circuit from ignition is open (check the fuse)
 
Main relay is damaged or has failed
 
PCM has failed
 

Trouble Code: P1624

Cooling Fan Low Relay Circuit Malfunction

Trouble Code Conditions: Key on or engine running and the PCM detected the Cooling Fan Low Relay control circuit was in a low state during the CCM test.

Possible Causes:



Cooling fan low relay control circuit is open
 
Cooling fan low relay control circuit is shorted to ground
 
Cooling fan low relay is damaged or has failed
 
PCM has failed
 

Trouble Code: P1625

Cooling Fan High Relay Circuit Malfunction

Trouble Code Conditions: Key on or engine running, and the PCM detected the Cooling Fan High Relay 1 or 2 Control circuit was in a low state during the test.

Possible Causes:



Cooling fan high relay 1 or 2 control circuit is open
 
Cooling fan high relay 1 or 2 control circuit is shorted to ground
 
Cooling fan high relay 1 or 2 is damaged or has failed
 
PCM has failed
 

Trouble Code: P1642

Non-Immobilizer EMS Connected to Immobilizer

Trouble Code Conditions: Key on, and the PCM detected the signal from the Immobilizer Control Unit (ICU) was inconsistent during the self-test period.

Possible Causes:



Check the ICU (controller) for any related trouble codes
 

 
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