Deutz-Fahr P1129-00: NOx Sensor (Upstream SCR) - Short Circuit

The fault code indicates a short circuit in the NOx sensor located upstream of the Selective Catalytic Reduction (SCR) system. This condition may affect the proper functioning of the emissions control system.

1. 1

   The wiring and connections of the NOx sensor (upstream SCR)

1. 1

   Inspect

   Inspect the wiring and connections of the NOx sensor (upstream SCR) for damage, wear, or improper connections.

2. 2

   Test

   Test the NOx sensor (upstream SCR) for continuity and resistance using a multimeter, following the service manual procedures.

3. 3

   Replace

   If a fault is confirmed, replace the NOx sensor (upstream SCR) with a compatible part.