P0091 - Fuel Pressure Regulator Control Circuit Low
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2022 Ford F-550 Super Duty, 2022 Ford F-450 Super Duty, 2022 Ford F-350 Super Duty, 2022 Ford F-250 Super Duty, and 2021 Ford F-550 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.
DTC DESCRIPTION P0091 - FUEL PRESSURE REGULATOR CONTROL CIRCUIT LOW
| Description: This DTC sets when the state of the output driver signal for the FPCV circuit moves outside the minimum or maximum limit for the commanded state. | |||
Possible Causes:
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| Diagnostic Aids:
The presence of this DTC may indicate that the vehicle is operating in derate mode and may experience a loss of power. After repair, the vehicle may still display a system warning message. Drive the vehicle until the system warning message has cleared from the instrument cluster message center. This DTC sets when there is a short to ground on the FPCV circuit. |
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| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST ME . | ||