JCB U059E-9A: CAN Bus Message Error for Heater Ratio from Upstream NOx Sensor

A communication error has occurred with the CAN bus message related to the heater ratio from the upstream NOx sensor. This indicates a failure in the data transmission or reception of this specific signal.

1. 1

   The communication link between the upstream NOx sensor and the controller

2. 2

   The wiring and connections associated with the upstream NOx sensor

3. 3

   The functionality of the upstream NOx sensor itself

1. 1

   Inspect

   Inspect the wiring and connections related to the upstream NOx sensor for damage, corrosion, or loose contacts.

2. 2

   Test

   Test the communication link between the upstream NOx sensor and the controller using diagnostic tools.

3. 3

   Replace

   If the upstream NOx sensor is found to be faulty, replace it with a compatible component.