Engine and gearbox (P)
P0025: Exhaust Camshaft Timing Over-Retarded Bank 2
The exhaust camshaft on bank 2 is not advancing as it should. This can affect engine performance and efficiency.
Checked by a licensed car technician · last reviewed 29 September 2026
Symptoms
- Reduced engine power
- Poor fuel economy
- Rough idling
- Check engine light on
Common causes
- Oil control valve stuck
- Low engine oil level
- Dirty or old engine oil
- Faulty camshaft position sensor
- Wiring issues
How to check it yourself
- Check engine oil level and top up if needed
- Inspect engine oil condition and change if dirty
- Test the oil control valve for proper operation
- Inspect wiring and connectors to the camshaft position sensor
- Test the camshaft position sensor
Can I keep driving?
The car can be driven, but performance may be reduced. Address the issue soon to avoid further problems.
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