DTC P0191: - Fuel Rail Pressure Sensor A Circuit Range/Performance

DTC P0191: - FUEL RAIL PRESSURE SENSOR A CIRCUIT RANGE/PERFORMANCE

Description:	The comprehensive component monitor (CCM) checks the fuel rail pressure (FRP) sensor for an acceptable fuel pressure. The test fails when the fuel pressure falls below or exceeds a minimum/maximum calibrated value for a calibrated period of time.
Possible Causes:	High fuel pressure Low fuel pressure Damaged FRP sensor Excessive resistance in the circuit Vacuum leaks Low or no fuel
Diagnostic Aids:	A FRP PID value during ignition ON, engine running of 138 kPa (20 psi) to 413 kPa (60 psi) is acceptable.
Application	Key On Engine Off	Key On Engine Running	Continuous Memory
All	GO to Pinpoint Test DD .