P068D
Cylinder 7 Glow Plug Control Circuit High
P068D is an OBD-II diagnostic trouble code meaning: Cylinder 7 Glow Plug Control Circuit High. Common causes: control wire short circuit to power, open ground circuit. Estimated repair cost: $17–278.
Symptoms
- Difficulty starting a diesel engine in cold weather
- Check Engine Light
- White smoke on cold start
- Unstable engine operation
- Glow plug indicator
Causes
- Control wire short circuit to power
- Open ground circuit
- GPCM module malfunction
- Damage to wiring or connectors
- Internal ECU fault
How to Fix
- Read OBD-II codes
- Inspect the wiring and connectors of cylinder 7 spark plug and GPCM
- Measure the voltage in the control circuit
- Check the ground circuit for open circuit
- Check the wire for short to power
- If serviceable - diagnostics and replacement of GPCM or ECU
Related codes
Error P068D by Vehicle Brand
FAQ
What does the P068D code mean?
P068D is an OBD-II diagnostic trouble code that indicates: Cylinder 7 Glow Plug Control Circuit High
What causes a P068D error code?
The most common causes of P068D include: Control wire short circuit to power; Open ground circuit; GPCM module malfunction; Damage to wiring or connectors.
How do I fix a P068D diagnostic trouble code?
To fix P068D: Read OBD-II codes. Inspect the wiring and connectors of cylinder 7 spark plug and GPCM. Measure the voltage in the control circuit. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P068D?
Yes, but get it checked soon
How much does it cost to fix P068D?
The estimated repair cost for P068D is $17–278. Actual cost depends on your vehicle, location, and labor rates.
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