P0230: Fuel Pump Primary Circuit Malfunction

WARNING: This page does not describe the selected car, but rather 30 other vehicles, including the 2004 Mercury Sable, 2004 Mercury Mountaineer, 2004 Mercury Monterey, 2004 Mercury Marauder, and 2004 Mercury Grand Marquis. However, it is still accessible from the selected car via links, so may be relevant.

P0230 - FUEL PUMP PRIMARY CIRCUIT MALFUNCTION

Description:	NOTE: For natural gas applications, the following description applies to the fuel shutoff valve (FSV) circuit. The PCM monitors the fuel pump (FP) circuit output from the PCM. The test fails if: with the FP output commanded ON (grounded), excessive current draw is detected on the FP circuit; or with the FP output commanded OFF, voltage is not detected on the FP circuit (the PCM expects to detect VPWR voltage coming through the fuel pump relay coil to the FP circuit).
Possible Causes:	Open or shorted fuel pump (FP) circuit. Open VPWR circuit to the fuel pump relay. Damaged fuel pump relay. Damaged PCM.
Diagnostic Aids:	When the LFCF PID reads YES, a fault is currently present FPF. An open circuit or short to ground can only be detected with the fuel pump commanded OFF. A short to power can only be detected with the fuel pump commanded ON. During the KOEO and KOER self-test, the fuel pump output command is cycled on and off.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
Dedicated NGV	GO to PINPOINT TEST KC: FUEL SHUTOFF VALVE RELAY Step 1.	GO to PINPOINT TEST KC: FUEL SHUTOFF VALVE RELAY Step1.	GO to PINPOINT TEST KC: FUEL SHUTOFF VALVE RELAY Step 26.
F-Super Duty, Excursion, Expedition, Navigator	GO to PINPOINT TEST KA: FUEL PUMP RELAY Step 55.	GO to PINPOINT TEST KA: FUEL PUMP RELAY Step 55.	GO to PINPOINT TEST KA: FUEL PUMP RELAY Step 84.
All others	GO to PINPOINT TEST KA: FUEL PUMP RELAY Step 1.	GO to PINPOINT TEST KA: FUEL PUMP RELAY Step 1.	GO to PINPOINT TEST KA: FUEL PUMP RELAY Step 40.