The crankshaft and camshaft position signals are out of correlation on Bank 1 — possible cam-timing fault.
SYMPTOMS
- Check-engine light
- Hard start or no-start
- Rough running
- Power loss
LIKELY CAUSES
- Cam timing off (chain stretch/tensioner)
- Faulty cam or crank sensor
- VarioCam adjuster stuck
- Reluctor damage
DIAGNOSIS STEPS
- Compare cam vs crank correlation in live data
- Inspect cam/crank sensors and reluctors
- Verify cam timing mechanically if needed
RELATED PARTS
- Camshaft position sensor
- Crankshaft position sensor
- Timing chain/tensioner