New Holland 3771: Oxidation Catalyst: Up and Downstream Temperature Sensors Exchanged

The fault code indicates that the upstream and downstream temperature sensors in the oxidation catalyst have been exchanged. This may lead to incorrect temperature readings and improper monitoring of the catalyst's performance.

1. 1

   Verify the installation of the upstream and downstream temperature sensors in the oxidation catalyst

2. 2

   Check for any physical damage or misalignment of the sensors

1. 1

   Inspect the temperature sensors

   Confirm that the upstream and downstream temperature sensors are correctly positioned and not swapped.

2. 2

   Reinstall the sensors if necessary

   If the sensors are found to be exchanged, reinstall them in their correct positions as per the service manual.