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P0231 Diagnostic Trouble Code Discussion for October 2010

Fuel Pump Feedback Circuit Low Voltage

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Trouble Ticket Help Requests for DTC P0231
Help Request Posted
2007 Ford F-250 Super Duty XL 6.0L No Start VIN: 1FTSX21P97
P0231: Fuel Pump Secondary Circuit Low. Well this one has me stumped. We changed the oil and filter, drove it out of shop parked it and that was the last time it ran. it would crank and run with no throttle response and die. now it just cranks, fires up and dies. I hooked up the mastertech to it and...
October 08, 2010
2002 Ford F-150 Harley-Davidson Edition 5.4L No Start VIN: 1FTRW07352
P0231: Fuel pump secondary ckt low. With a fuel pressure ga installed, pressure is good on key up and holds. When crank, it starts, runs ok but fuel pressure drops to 0 psi in approx 5 seconds and the eng stalls. When the eng stalls, fuel pressure initializes and comes to spec. Sometimes this ha...
October 12, 2010