2005 Ford V-10 E-450 Chassis. I routinely get the Code PO 191 when acceleration to highway speed after a brief engine turn-off. The code indicates "Fuel Pressure Sensor Circuit Performance". The engine has no driveability issues. All service items are current. Scanning guage clears the code.
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Ford OBD-II Diagnostic Code PO 191
Posted 24 August 2013 - 05:02 PM
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-High fuel pressure
- Low fuel pressure
- Damaged FRP sensor
- Excessive resistance in the circuit
- Low or no fuel
- Wiring harness connector of the fuel pressure sensor
- Fuel Rail Pressure Sensor
- Vacuum leaks
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