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P0191 Diagnostic Trouble Code Discussion for April 2007

Fuel Rail Pressure Sensor Performance

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Trouble Ticket Help Requests for DTC P0191
Help Request Posted
2002 Mercury Sable GS 3.0L MIL Lamp on VIN: 1MEFM50UX2
P0191: Fuel rail pressure sensor circuit range/performance. ... with MIL on and a P0191 code. The freeze frame data was: fuel system open, calc. load 16%, 190 deg. ECT, STFTB1 -2.34%,LT FTB1 -10.14%,STFTB2-2.34%,LTFTB2-6.24%, Fuel Pressure 60.47 PSI, 1929 RPM, 62 MPH. Datastream with engine running: fuel rail pressur...
April 04, 2007