P0230
PowertrainFuel Systemhigh severityFuel Pump Primary Circuit Malfunction
What P0230 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)
Where to start: Check fuse and relay first. Replace fuel pump if no voltage issue found.
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