John Deere 003517.12: DEF Level Sensor Has Detected A Problem With The Sensor

The ECU has detected a problem with the DEF Level Sensor. This indicates an issue with the sensor that monitors the level of DEF fluid in the system.

1. 1

   The DEF Level Sensor

2. 2

   The wiring or connections to the DEF Level Sensor

1. 1

   Inspect

   Inspect the DEF Level Sensor for physical damage or signs of wear.

2. 2

   Check

   Check the wiring and connections to the DEF Level Sensor for looseness, corrosion, or damage.

3. 3

   Test

   Test the DEF Level Sensor according to the service manual procedures to confirm the fault.