Engine and gearbox (P)
P0023: Exhaust Camshaft Actuator Circuit Fault
This code indicates an electrical problem with the exhaust camshaft position actuator on bank 2. It affects the timing of the exhaust camshaft.
Checked by a licensed car technician · last reviewed 29 September 2026
Symptoms
- Engine runs rough
- Decreased fuel efficiency
- Check engine light on
- Possible engine stalling
Common causes
- Faulty oil control valve
- Wiring issues
- Faulty camshaft position actuator
- ECU problem
How to check it yourself
- Inspect wiring and connectors for damage
- Test the oil control valve
- Check the camshaft position actuator
- Scan for additional codes
Can I keep driving?
The car can be driven, but performance 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