Engine and gearbox (P)
P003D: Camshaft Profile Actuator Stuck On Bank 1
The intake camshaft profile actuator on bank 1 is stuck in the high-lift position and does not disengage when commanded. This can affect idle quality and emissions.
Checked by a licensed car technician · last reviewed 30 September 2026
Symptoms
- Rough idle
- Increased emissions
- Reduced fuel efficiency
- Possible engine noise
Common causes
- Locking pin stuck engaged
- Oil control valve stuck open
- Carbon or debris buildup
How to check it yourself
- Check for any engine warning lights
- Inspect oil level and quality
- Examine the camshaft actuator for debris
- Test the oil control valve operation
Can I keep driving?
The car can be driven, but performance and emissions may be affected.
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