Fault-Code Library · Variable valve timing
P0011: Intake camshaft timing over-advanced, bank 1
The intake camshaft is more advanced than the ECU expects for the current operating condition.
Common symptoms
- •Rough idle
- •Poor response
- •Cold-start rattle
- •Engine warning light
Likely causes
- •Incorrect or dirty oil
- •Sticking camshaft adjuster solenoid
- •Timing-chain stretch
- •Camshaft actuator or oil-control fault
First checks
- •Confirm oil level and correct specification
- •Check live camshaft adaptation values
- •Inspect timing and oil-control solenoid operation before replacing parts
Important
Cam timing faults can be oil-control issues or real mechanical timing problems; do not ignore repeated faults.
A fault code identifies a detected condition, not a failed part. Confirm manufacturer-specific subcodes and live data.
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