Fault-Code Library · Variable valve timing
P0014: Exhaust camshaft timing over-advanced, bank 1
The exhaust camshaft position is more advanced than commanded or is slow to return to the expected position.
Common symptoms
- •Uneven idle
- •Poor acceleration
- •Rattle on startup
- •Engine warning light
Likely causes
- •Sticking exhaust cam actuator
- •Dirty oil or blocked oil passage
- •Timing-chain wear
- •Camshaft position sensor plausibility issue
First checks
- •Check oil condition and service history
- •Compare commanded versus actual cam angle
- •Inspect solenoid screens and timing data
Important
Repeated cam timing faults deserve diagnosis before long drives or hard acceleration.
A fault code identifies a detected condition, not a failed part. Confirm manufacturer-specific subcodes and live data.
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