DTC code
P0670
Glow Plug Control Module 1 Control Circuit/Open
Technical guide
Symptoms
- Hard cold start
- check engine light
- glow plug system fault
Probable causes
- Glow plug module control circuit fault
- failed glow plug control module
- wiring open/short to module
- ECM output fault
Diagnostic steps
- Check glow plug control module connector.
- Test module power supply and ground.
- Replace glow plug control module 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 P0670
Nothing confirmed yet for this code. No guess is offered on purpose.
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