DTC code
P0012
A Camshaft Position - Timing Over-Retarded Bank 1
Technical guide
Symptoms
- Rough idle
- poor performance
- timing rattle
- check engine light
Probable causes
- OCV stuck in over-retarded position
- sludged OCV
- oil viscosity too high
- timing chain wear
- ECM fault
Diagnostic steps
- Change engine oil and filter.
- Clean OCV solenoid.
- Check timing chain stretch.
- Replace OCV if cleaning fails.
Cross-checked technical synthesis (QA). It does not replace the manufacturer's procedure.
Models most reported with this code (NHTSA)
Count of distinct owner complaints mentioning the code. US data — same engines, same failures.
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 P0012
Nothing confirmed yet for this code. No guess is offered on purpose.
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