Engine and gearbox (P)
P0011: Camshaft timing over-advanced
The intake camshaft timing is more advanced than the engine control module has commanded. This can affect engine performance and efficiency.
Checked by a licensed car technician · last reviewed 29 September 2026
Symptoms
- Rough idling
- Poor fuel economy
- Reduced engine power
- Check engine light on
Common causes
- Sticking VVT solenoid
- Incorrect oil viscosity
- Timing chain wear
- Faulty camshaft position sensor
- Oil flow issues
How to check it yourself
- Check engine oil level and condition
- Inspect oil service history for correct viscosity
- Test VVT solenoid operation
- Inspect timing chain for wear
- Check camshaft position sensor
Can I keep driving?
The car can still be driven, but it is advisable to address the issue soon to prevent further engine damage.
General guidance, not a professional inspection. Confirm faults with measurements before buying parts, and use a qualified mechanic for brakes, steering, fuel leaks, airbags, and other safety-critical work. Terms and disclaimer