P0243moderate severityPowertrain
Turbocharger/Supercharger Wastegate Solenoid A
on 2007 Audi RS4 4.2L V8 · AWD
What this code means
Malfunction in the wastegate solenoid A.
Symptoms
- Check Engine Light
- Overboosting or underboosting
- Limp mode
Common causes
- Faulty wastegate solenoid
- Wiring damage
- Stuck wastegate
Diagnostic steps
- Test solenoid resistance
- Check wiring
- Inspect wastegate
Repair notes
Replace wastegate solenoid.
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