P0263high severityPowertrain
Cylinder 1 Contribution/Balance
on 2000 Audi A4 2.8L V6 · AWD
What this code means
Cylinder 1 is not contributing its expected share of power output.
Symptoms
- Check Engine Light
- Rough idle
- Misfire
- Vibration
Common causes
- Low compression cylinder 1
- Faulty injector
- Valve issue
- Head gasket leak
Diagnostic steps
- Run power balance test
- Check compression
- Test injector
- Inspect valves
Repair notes
Diagnose mechanical condition of cylinder 1.
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