P0230high severityPowertrain
Fuel Pump Primary Circuit Malfunction
on 2009 Audi A4 3.2L V6 · AWD
What this code means
Malfunction in the fuel pump primary (relay/power supply) circuit.
Symptoms
- Check Engine Light
- No start condition
- Engine stalling
- Intermittent power loss
Common causes
- Faulty fuel pump relay
- Wiring damage
- Fuel pump failure
- Blown fuse
- Inertia switch tripped
Diagnostic steps
- Check fuel pump fuse
- Test fuel pump relay
- Listen for fuel pump prime
- Test voltage at fuel pump connector
- Check inertia switch (Ford)
Repair notes
Check fuse and relay first. Replace fuel pump if no voltage issue found.
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