JCB P2201-06: Downstream NOx Sensor Self Diagnostic

The system has detected a fault related to the downstream NOx sensor self diagnostic. This indicates an issue with the sensor's ability to perform its self-check function, which may affect emissions monitoring and engine performance.

1. 1

   The downstream NOx sensor

2. 2

   The wiring and connections to the downstream NOx sensor

3. 3

   The component identified by this code

1. 1

   Inspect

   Inspect the downstream NOx sensor for physical damage or contamination.

2. 2

   Check

   Check the wiring and connections to the downstream NOx sensor for looseness, corrosion, or damage.

3. 3

   Test

   Test the downstream NOx sensor according to the service manual procedures for self-diagnostic functionality.