DTC P0191 - Fuel Rail Pressure Sensor Circuit Range/Performance (Bank 1)
WARNING: This page is about a different car, the 2020 Ford F-550 Super Duty, 2020 Ford F-450 Super Duty, 2020 Ford F-350 Super Duty, 2020 Ford F-250 Super Duty, and 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
DTC DESCRIPTION P0191 - FUEL RAIL PRESSURE SENSOR CIRCUIT RANGE/PERFORMANCE (BANK 1)
| Description: | This DTC sets when the fuel pressure falls below or exceeds a minimum or maximum calibrated value for a calibrated period of time. | ||
| 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. Monitor the FRP PID with the ignition ON, engine running. The correct FRP is between 34.47 MPa (5000 psi) and 48.26 MPa (7000 psi). |
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| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to PINPOINT TEST M . | ||