DTC code
P0678
Cylinder 8 Glow Plug Circuit/Open
Technical guide
Symptoms
Cylinder 8 cold start issue
Probable causes
- Glow plug cylinder 8 circuit fault
- failed glow plug cylinder 8
Diagnostic steps
1) Test glow plug 8. 2) Replace if failed.
Cross-checked technical synthesis (QA). It does not replace the manufacturer's procedure.
AI here is a librarian: this page shows only what mechanics confirmed, or says “unknown”. It never suggests a diagnosis — MECCANIC interprets the code, never your car.
0 confirmed cases on P0678
Nothing confirmed yet for this code. No guess is offered on purpose.
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