Engine and gearbox (P)
P0018: Crankshaft-Camshaft Correlation Issue
This code indicates a mismatch between the crankshaft and camshaft positions on bank 2. It suggests a timing issue that can affect engine performance.
Checked by a licensed car technician · last reviewed 29 September 2026
Symptoms
- Rough engine idle
- Poor acceleration
- Check engine light on
- Engine misfires
Common causes
- Timing chain stretched (bank 2)
- Bank 2 cam phaser failed
- Faulty crankshaft position sensor
- Faulty camshaft position sensor
- Wiring issues
How to check it yourself
- Inspect timing chain for wear
- Check cam phaser operation
- Test crankshaft position sensor
- Test camshaft position sensor
- Inspect wiring and connectors
Can I keep driving?
Driving is not recommended as it may cause 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