JCB P2200-11: Lambda Signal Below Minimum for Upstream NOx Sensor

The lambda signal from the upstream NOx sensor is below the minimum threshold, indicating a potential issue with the sensor's ability to provide accurate readings.

1. 1

   The upstream NOx sensor

2. 2

   The wiring and connections to the upstream NOx sensor

3. 3

   The control unit receiving the signal from the upstream NOx sensor

1. 1

   Inspect

   Inspect the upstream NOx sensor for damage, contamination, or wear.

2. 2

   Test

   Test the wiring and connections to the upstream NOx sensor for continuity and proper voltage.

3. 3

   Verify

   Verify the signal from the upstream NOx sensor using a diagnostic tool to ensure it is within the expected range.