2.2.351. SPN 522455, FMI 19, Downstream NOx sensor: AT1OGC2Rx Frame Timeout Error

Description

Communication problem of the NOx sensor.

Possible causes are:

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

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

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

See NOx sensor for reference.