3.2.498. SPN 91, FMI 4, Accelerator pedal 1 sensor below normal (IDLE)ΒΆ

Description

The measured accelerator pedal sensor signal is below the normal operating range.

Possible causes are:

  • The sensor wiring is defective.
  • The accelerator pedal sensor power supply is not correct.
  • The sensor is defective.

Reaction in EEM

The FC is stored and the warning lamp is activated. The CAN message indicates active fault. The engine speed is reduced to low idle if there are no other speed requests available.

Solution

First save the error log and then erase it. Restart the ECU after erasing the error log. If the fault occurs again during the next driving cycle, check the following paths:

  • Check the accelerator pedal 1 sensor wiring, the connectors and the contact surfaces of the connector pins (possible oxidation).
  • Check the 5 V power supply to the sensor.
  • Check the operation with another accelerator pedal sensor to see if the accelerator pedal sensor is defective.