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P0191 Diagnostic Trouble Code Discussion for June 2015

Fuel Rail Pressure Sensor Performance

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Trouble Ticket Help Requests for DTC P0191
Help Request Posted
2005 Ford Five Hundred Limited 3.0L Hesitation, Stall, MIL Lamp on VIN: 1FAHP25115
P0191: Fuel pressure. Pulled codes and checked fuel rail pressure sensor vs. Manual gauge and they are with in 5psi. Desired fuel rail pressure is 55psi fuel rail pressure is 14psi and drops when vehicle stalls. Powers and grounds were checked to fuel pump driver mod. And fuel pump...
June 30, 2015
2008 Ford F-450 Super Duty XLT 6.8L Hesitation, MIL Lamp on VIN: 1FDXW46Y68
P0191: fuel rail pressure out of range. ... that has given me problems for over 6 months now.I changed the pump in January and everything was fine until a week ago. it is giving the same symptoms as it was when the pump was replaced. The fuel pressure is fine until it gets warm, then it drops to aro...
June 30, 2015