JCB P2201-13: Downstream NOx Sensor Open Circuit

The fault code indicates an open circuit in the downstream NOx sensor. This may prevent the system from accurately monitoring exhaust emissions, potentially affecting engine performance and compliance with emissions standards.

1. 1

   Wiring and connections to the downstream NOx sensor

2. 2

   The integrity of the downstream NOx sensor itself

1. 1

   Inspect

   Inspect the wiring and connections to the downstream NOx sensor for damage, corrosion, or loose connections.

2. 2

   Test

   Test the downstream NOx sensor for proper functionality using a multimeter or diagnostic tool as specified in the service manual.