JCB P2201-1C: Downstream NOx Sensor Short Circuit to Ground or Battery

The fault code indicates a short circuit in the downstream NOx sensor to either ground or battery. This can affect the proper functioning of the emissions control system.

1. 1

   The wiring and connections of the downstream NOx sensor

2. 2

   The integrity of the sensor itself

3. 3

   The circuit for the downstream NOx sensor

1. 1

   Inspect

   Inspect the wiring and connections of the downstream NOx sensor for damage, wear, or improper connections.

2. 2

   Test

   Test the downstream NOx sensor for proper operation and check for any short circuits using a multimeter.

3. 3

   Replace

   If a fault is found, replace the downstream NOx sensor or repair the affected circuit as needed.