Engine and gearbox (P)
P0020: Camshaft Position Actuator Circuit Fault
This code indicates an electrical problem with the intake camshaft position actuator on bank 2. It affects the timing of the engine's intake valves.
Checked by a licensed car technician · last reviewed 29 September 2026
Symptoms
- Engine runs rough
- Reduced fuel efficiency
- Check engine light on
- Possible loss of power
Common causes
- Oil control valve electrically failed
- Faulty wiring or connector
- Faulty camshaft position actuator
- Faulty engine control module (ECM)
How to check it yourself
- Inspect wiring and connectors for damage
- Test the oil control valve for electrical faults
- Check the camshaft position actuator
- Scan for additional fault codes
Can I keep driving?
The car can be driven, but performance may be reduced.
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