2.2.134. SPN 3229, FMI 12, Downstream NOx sensor: Sensor heater is not heated fast enough.ΒΆ

Description

Heater problem of the NOx sensor.

Possible causes are:

  • The NOx sensor is defective.
  • The NOx sensor is tampered.

Reaction in EEM

The FC is stored and the warning lamp is activated. The CAN message indicates an active fault.

NOTE: The present fault is classified as an emission related fault. Engine power is reduced after a certain time which is defined by an authority.

Solution

First save the error log and then do the procedure that follows:

  • Check the operation with another NOx sensor to see if the sensor is defective.

See NOx sensor for reference.