DTC P1235: Fuel Pump Control Out Of Range
WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
P1235 - FUEL PUMP CONTROL OUT OF RANGE
| Description: | Indicates the FPDM has detected an invalid or missing FP circuit signal from the PCM. The FPDM sends a message to the PCM through the FPM circuit, indicating this failure has been detected. The PCM sets the DTC when the message is received. | ||
| Possible Causes: |
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| Diagnostic Aids: | The FPDM sends a 25% duty cycle (250 ms ON, 750 ms OFF) through the FPM circuit to the PCM while the fault is being detected by the FPDM. If the fault is no longer detected, the FPDM returns to sending an all OK (50% duty cycle) message to the PCM. | ||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test KB . | ||