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Diagnostic Trouble Code: P0171
Diagnostic Trouble Code Name: Fuel System too lean (I6, bank 1- V8)
Vehicle Make: Ford
Vehicle Model: Falcon (BA)
Diagnostic Code Entered By: ZerOne
Diagnostic Code Entered On: Wed Oct 06, 2010 11:00 pm
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Please Note: The DTC Information provided has been randomly generated.
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Diagnostic Trouble Code Description:
Accelerator Pedal Position Sensor 2 Circuit Voltage
Possible Sensor Faults
ECM
Possible Related Diagnostic Trouble Codes
DTC P2120, P2125, or P2138
Circuit / System Description
The accelerator pedal assembly contains two accelerator pedal position (APP) sensors. The APP sensors are mounted in the pedal assembly and are not serviceable. The APP sensors provide a signal voltage that changes relative to the position of the accelerator pedal. The engine control module (ECM) supplies a separate 5-volt reference and low reference circuit for each of the APP sensors.
The APP sensor?1 signal voltage increases as the pedal is depressed, from approximately 1?V at rest to above 4?V when fully depressed. The APP sensor?2 signal voltage increases as the pedal is depressed, from approximately 0.5?V at rest to greater than 2?V with the accelerator pedal fully depressed.
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