New Holland 19020 – DCU: Temperature sensor before catalyst (electrical) | signal low

The temperature sensor located before the catalyst is reporting a low signal, which may indicate a fault in the sensor or its associated circuit.

1. 1

   The temperature sensor before catalyst

2. 2

   The wiring and connections to the temperature sensor before catalyst

1. 1

   Inspect

   Inspect the temperature sensor before catalyst for physical damage or corrosion.

2. 2

   Test

   Test the electrical connection and wiring to the temperature sensor before catalyst for continuity and proper voltage.

3. 3

   Replace

   If the sensor or wiring is found to be faulty, replace the temperature sensor before catalyst.