DTC P0230: Fuel Pump Primary Circuit Malfunction
WARNING: This page does not describe the selected car, but rather 32 other vehicles, including the 2005 Mercury Sable, 2005 Mercury Mountaineer, 2005 Mercury Monterey, 2005 Mercury Montego, and 2005 Mercury Mariner. However, it is still accessible from the selected car via links, so may be relevant.
P0230 - FUEL PUMP PRIMARY CIRCUIT MALFUNCTION
| Description: | The powertrain control module (PCM) monitors the fuel pump (FP) circuit output from the PCM. The test fails if the FP output is 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 and the PCM expects to detect VPWR voltage coming through the fuel pump relay coil to the FP circuit. | ||
| Possible Causes: |
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| Diagnostic Aids: | When the FPF PID reads YES, a fault is currently present. An open circuit or short to ground can only be detected with the fuel pump commanded OFF. A short to voltage can only be detected with the fuel pump commanded on. During the key on engine off (KOEO) and key on engine running (KOER) self-test, the fuel pump output command is cycled on and off. |
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| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| Excursion | GO to KA: Fuel Pump (FP) Relay STEP KA31. | GO to KA: Fuel Pump (FP) Relay STEP KA31. | GO to KA: Fuel Pump (FP) Relay STEP KA60. |
| All others | GO to KA: Fuel Pump (FP) Relay STEP KA1. | GO to KA: Fuel Pump (FP) Relay STEP KA1. | GO to KA: Fuel Pump (FP) Relay STEP KA30. |