P0233 OBD II Trouble Code Fuel Pump Secondary Circuit Intermittent
Detailed information on troubleshooting and repairing a P0233 code which means there is an intermittent problem with the fuel pump secondary circuit.
Symptoms of P0233 OBD II Trouble Code
- MIL (malfunction indicator lamp) illumination
- Fuel pump runs with key off
- Small amount of voltage present on FP (fuel pump) voltage supply circuit due to short
Common Causes of P0233 OBD II Trouble Code
- Bad FP relay
- Short to voltage on FP voltage supply circuit or feedback circuit
- Short to ground on PCM
- FP relay control circuit PCM
- FP relay control driver shorted to ground internally