P0021moderate severityPowertrain
Intake Camshaft Position Timing Over-Advanced Bank 2
on 2000-2003 Audi S6 4.2L V8 · AWD
What this code means
The intake camshaft timing for Bank 2 is more advanced than commanded.
Symptoms
- Check Engine Light
- Rough idle
- Poor fuel economy
- Stalling
Common causes
- Dirty oil/sludge
- Stuck VVT solenoid
- Worn phaser
- Oil passage blockage
Diagnostic steps
- Check oil condition
- Test VVT solenoid
- Monitor cam position
- Check timing chain
Repair notes
Service VVT system Bank 2.
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