DTC P0668 [ZY, Z6]

id0102c7833900

DTC P0668

PCM temperature sensor circuit low input

DETECTION CONDITION

• The PCM monitors the PCM temperature sensor (integrated in the PCM) signal. If the PCM detects that the PCM temperature sensor voltage is 0.10 V or less, the PCM determines that the PCM temperature sensor has a malfunction.
Diagnostic support note
• This is a continuous monitor (Other).
• The MIL does not illuminate.
• PENDING CODE is available if the PCM detects the above malfunction condition.
• FREEZE FRAME DATA is not available.
• The DTC is stored in the PCM memory.

POSSIBLE CAUSE

• PCM temperature sensor malfunction

Diagnostic procedure

STEP

INSPECTION

ACTION

1
VERIFY FREEZE FRAME DATA HAS BEEN RECORDED
• Has FREEZE FRAME DATA been recorded?
Yes
Go to the next step.
No
Record the FREEZE FRAME DATA on the repair order, then go to the next step.
2
VERIFY RELATED REPAIR INFORMATION AVAILABILITY
• Verify related service repair information availability.
• Is any related repair information available?
Yes
Perform repair or diagnosis according to the available repair information.
• If the vehicle is not repaired, go to the next step.
No
Go to the next step.
3
VERIFY TROUBLESHOOTING OF DTC P0668 COMPLETED
• Make sure to reconnect all disconnected connectors.
• Turn the ignition switch to the ON position (Engine off).
• Clear the DTC from the PCM memory using the WDS or equivalent.
• Start the engine.
• Is the same DTC present?
Yes
Replace the PCM, then go to the next step.
No
Go to the next step.
4
VERIFY AFTER REPAIR PROCEDURE
• Perform "AFTER REPAIR PROCEDURE".
• Are any DTCs present?
Yes
Go to the applicable DTC troubleshooting.
No
Troubleshooting completed.