P0231

Fuel Pump Output Drive - Short To Ground

P0231 - Fuel pump output drive fault.: Last occurrence - minimum signal

Possible causes:
1. Short circuit C0331/10 (BP) - ground.
2. Connectors C0331, C2022.
3. Fuel pump relay.

1. Short circuit C0331/10 (BP) - ground.
SHORT_CIRCUIT
Check resistance < 5.0 Ohms.

2. Connectors C0331, C2022.
CONNECTOR
Check for connector not correctly latched, backed out pins, damaged pins, corroded pins

3. Fuel pump relay.
RELAY
Check for relay not correctly seated, backed out pins, damaged pins, corroded pins, relay coil open circuit, faulty relay contacts, ensure power & ground feeds to relay coil are present and that the relay is energised.