P0230 - Fuel Pump Primary Circuit Malfunction
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
Possible causes
- Blown Fuel Pump fuse
- Open Fuel Pump Monitor Circuit
- Faulty Fuel Pump Relay
- Damaged ECM.
P0230 Description
The Engine Control Module (
ECM) provides ignition positive voltage to the coil side of the fuel pump relay. When the ignition switch is first turned ON, the
ECM energizes the fuel pump relay, which applies power to the fuel pump. The
ECM enables the fuel pump relay as long as the engine is cranking or running, and crankshaft reference pulses are received. If no crankshaft reference pulses are received, the
ECM de-energizes the fuel pump relay after 2 seconds. The
ECM monitors the voltage on the fuel pump relay control circuit.
Please go to this
LINK for P0300 diagnosis.
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