3.2.195. SPN 3573, FMI 4, throttle valve 2 sensor voltage below normalΒΆ

Description

The measured throttle valve 2 sensor voltage is below the normal operating range.

Possible causes are:

  • The sensor wiring is defective.
  • The throttle valve 2 sensor power supply is not correct.
  • The sensor is defective.

Reaction in EEM

The FC is stored and the warning lamp is activated. Engine power will be reduced (Degradation Level 1). The CAN message indicates active fault.

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 throttle valve 2 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 throttle valveto see if the sensor is defective.