Crank/cam correlation fault on Bank 1, exhaust-cam sensor.
SYMPTOMS
- Check-engine light
- Hard start
- Rough running
- Power loss
LIKELY CAUSES
- Cam timing off
- Faulty cam/crank sensor
- VarioCam adjuster stuck
- Reluctor damage
DIAGNOSIS STEPS
- Compare cam vs crank correlation
- Inspect sensors and reluctors
- Verify cam timing if needed
RELATED PARTS
- Camshaft position sensor
- Timing chain/tensioner