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P1271

Read the instructions below then start the fault diagnostic procedure.

Symptom: Check Engine on. Engine speed cannot be controlled. Idling speed set to 1400 rpm.

P1271


Pedal Position Sensor Circuit. Plausibility Fault Between Circuit 1 and 2.


Fault symptoms


• Check Engine on. Engine speed cannot be controlled. Idling speed set to 1400 rpm.


Conditions

The following conditions apply for this DTC:


• A DTC is generated when the power difference at max. pedal position between pedal position sensors 1 and 2 (Pedal position sensor 2: voltage x 2) is more than 1.0 V for more than 0.5 seconds.

Fault criteria not fulfilled for P1636, P1637, P1638 or P1639.


Diagnostic help

The pedal position sensor can be read using the diagnostic tool. Pedal position sensor 2 has the same power supply as the atmospheric pressure sensor.