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P1277 Diagnostic Trouble Code Discussion for January 2009

Accelerator Pedal Position Sensor 1 Circuit Low Voltage

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Trouble Ticket Help Requests for DTC P1277
Help Request Posted
2002 Ford F-550 Super Duty XL 7.3L MIL Lamp on VIN: 1FDAF57F33
P1277: Cylinder 7 - High To Low Side Open Detected. I need help with this truck. It has code for open cicuit to idm from #7 injector. I ohm tested the wiring from the idm to the injector and it indicates circuit isnt open i even compared readings from other injector circuits and they are the same. I replaced th...
January 12, 2009