Possible Causes

Possible causes are:

DTC P0230

• Open or shorted fuel pump circuit.
• Damaged fuel pump relay.
• Damaged PCM.
• Open VPWR circuit to fuel pump relay.

DTC P0231

• Open in B+ circuit to fuel pump relay.
• Fuel pump relay contacts open.
• Open in FP PWR circuit between fuel pump relay and connection to FPM circuit.
• Damaged fuel pump relay.
• Damaged PCM (engine will start).

DTC P0232 (No Start)

• Inertia Fuel Shutoff (IFS) switch not reset or electrically open.
• Open circuit between fuel pump and FPM circuit connection to FP PWR circuit.
• Poor fuel pump ground.
• Fuel pump electrically open.

DTC P0232 (Engine Starts)

• Fuel pump secondary circuit short to power.
• Fuel pump relay contacts always closed.
• Open in FPM circuit between PCM connection to FP PWR circuit.
• Damaged PCM.