P0682
Cylinder 12 Glow Plug Circuit/Open
P0682 is an OBD-II diagnostic trouble code meaning: Cylinder 12 Glow Plug Circuit/Open. Common causes: burnt out glow plug cylinder 12, broken power wire. Estimated repair cost: $33–89.
Symptoms
- Difficulty starting a large diesel engine in cold weather
- Check Engine Light
- White smoke on startup
- Unstable engine operation after starting
- Glow plug indicator
Causes
- Burnt out glow plug cylinder 12
- Broken power wire
- Connector damage
- GPCM module malfunction
- Oxidation of contacts
How to Fix
- Read OBD-II codes
- Measure the resistance of the glow plug of cylinder 12 (standard: 0.5–2 Ohm)
- Inspect the wiring and connector
- Check supply voltage
- Replace a faulty glow plug
- If the error occurs again - GPCM diagnostics
Related codes
Error P0682 by Vehicle Brand
FAQ
What does the P0682 code mean?
P0682 is an OBD-II diagnostic trouble code that indicates: Cylinder 12 Glow Plug Circuit/Open
What causes a P0682 error code?
The most common causes of P0682 include: Burnt out glow plug cylinder 12; Broken power wire; Connector damage; GPCM module malfunction.
How do I fix a P0682 diagnostic trouble code?
To fix P0682: Read OBD-II codes. Measure the resistance of the glow plug of cylinder 12 (standard: 0.5–2 Ohm). Inspect the wiring and connector. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0682?
Yes, but get it checked soon
How much does it cost to fix P0682?
The estimated repair cost for P0682 is $33–89. Actual cost depends on your vehicle, location, and labor rates.
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