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P1271 Diagnostic Trouble Code Discussion for November 2005

Air Fuel Sensor (Bank 1 Sensor 1) Circuit No Activity


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Trouble Ticket Help Requests for DTC P1271
Help Request Posted
2002 GMC Envoy SLE 4.2L No Start, Stall VIN: 1GKDT13S12
P1271: Accelerator Pedal Position Sensor 1-2 Correlation. vehicle was hauled in for no start. customer stated that the check engine light was on for 1 day, the next day it would'nt start. vehicle will run with motor vac supply line hooked to fuel rail at 52 psi. replaced fuel pump, vehicle will start and run for 5 se...
November 22, 2005
2002 GMC Envoy SLE 4.2L No Start, Stall VIN: 1GKDT13S12
P1271: Accelerator Pedal Position Sensor 1-2 Correlation. vehicle was hauled in for no start. customer stated that the check engine light was on for 1 day, the next day it would'nt start. vehicle will run with motor vac supply line hooked to fuel rail at 52 psi. replaced fuel pump, vehicle will start and run for 5 se...
November 22, 2005