JCB U059E-97: CAN Bus Message Error for NOx Signal Status from Upstream NOx Sensor

The system has detected a CAN bus message error related to the NOx signal status from the upstream NOx sensor. This indicates a communication issue with the sensor or the affected circuit.

1. 1

   The upstream NOx sensor

2. 2

   The affected circuit

3. 3

   The CAN bus connection

1. 1

   Inspect

   Inspect the upstream NOx sensor for damage or loose connections.

2. 2

   Test

   Test the affected circuit for continuity and proper signal transmission.

3. 3

   Check

   Check the CAN bus connection for any faults or disruptions.