P0012 on BMW — Camshaft Position Timing Over-Retarded, Bank 1
BMW
Verified1 source
1 source
- Official data (NHTSA)official_feed
What P0012 means
Caution — monitor closely
Same family as P0011, but the phaser lags behind its commanded position — on BMW this also points primarily to the variable-valve-timing system.
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General information, not a diagnosis or repair instruction. Always confirm with a qualified mechanic for your specific vehicle.
Common causes
- Contaminated or faulty VVT solenoid
What to check first
- Test VANOS solenoid with a scan tool
- Check engine oil condition
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