John Deere 003516.12: DEF Quality Sensor Has Detected A Problem With The DEF Sample

The DEF Quality Sensor has identified an issue with the DEF sample. This indicates a potential problem with the quality or integrity of the DEF being used. The issue is related to the component identified by this code and may affect the proper operation of the system.

1. 1

   The DEF sample being used

2. 2

   The connection or functionality of the DEF Quality Sensor

3. 3

   The condition of the DEF reservoir or supply line

1. 1

   Inspect

   Check the DEF sample for contamination, improper mixing, or incorrect type.

2. 2

   Verify

   Confirm the DEF Quality Sensor is properly connected and functioning.

3. 3

   Replace

   If the DEF sample is compromised, replace it with a correct and uncontaminated sample.