Deutz-Fahr 1898: DEF Quality Sensor or Internal Temperature Sensor Fault

The fault code indicates an issue with the DEF quality sensor or the internal temperature sensor, specifically a short circuit to battery or a cable break.

1. 1

   DEF quality sensor wiring and connections

2. 2

   Internal temperature sensor wiring and connections

3. 3

   Presence of a short circuit to battery in the sensor circuit

4. 4

   Integrity of the cable for the internal temperature sensor

1. 1

   Inspect

   Inspect the wiring and connections of the DEF quality sensor for damage, corrosion, or loose connections.

2. 2

   Inspect

   Inspect the wiring and connections of the internal temperature sensor for damage, corrosion, or loose connections.

3. 3

   Test

   Test the circuit for the DEF quality sensor and internal temperature sensor to identify any short circuit to battery.

4. 4

   Repair

   Repair or replace any damaged wiring, connectors, or the sensor if a fault is confirmed.