P0091 - Fuel Pressure Regulator Control Circuit Low
WARNING: This page is about a different car, the 2008 Ford Pickup, 2008 Ford F550 Super Duty, 2008 Ford F450 Super Duty, and 2008 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
P0091 - FUEL PRESSURE REGULATOR CONTROL CIRCUIT LOW
| Description: | The powertrain control module (PCM) monitors the fuel pressure control valve (FPCV) circuit for an electrical concern. The test fails when the signal moves outside the minimum or maximum allowable calibrated parameters for a specified fuel pressure control valve duty cycle by the PCM command. | |||
| Possible Causes: |
|
|||
| Diagnostic Aids: | Use the high pressure fuel injection pump 4-pin inline connector to diagnose the fuel volume control valve and fuel pressure control valve. | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory | |
| All | refer to PINPOINT TEST ME . | |||