P0286moderate severityPowertrain
Cylinder 9 Injector Circuit Low
on 2003 Audi A6 3.0L V6 · AWD
What this code means
The PCM detected a low voltage or open condition in the fuel injector control circuit for cylinder 9. The injector may not be receiving proper drive.
Symptoms
- Engine misfire
- Rough running
- Loss of power
Common causes
- Faulty fuel injector
- Open injector circuit wiring
- Corroded connector
- Failed injector driver in PCM
Diagnostic steps
- Scan for injector codes
- Inspect cylinder 9 wiring and connector
- Measure injector coil resistance
- Check PCM driver signal
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