John Deere 4345: Dosing Unit Return Line Heater Fault

The fault code indicates an issue with the Dosing Unit Return Line Heater. This component is responsible for maintaining the proper temperature in the return line of the dosing unit. A malfunction may affect the performance of the system.

1. 1

   Dosing Unit Return Line Heater

2. 2

   Wiring and connections to the Dosing Unit Return Line Heater

1. 1

   Inspect

   Check the Dosing Unit Return Line Heater for visible damage or signs of failure.

2. 2

   Test

   Test the Dosing Unit Return Line Heater for proper operation using the appropriate diagnostic tools.

3. 3

   Verify

   Verify the integrity of the wiring and connections to the Dosing Unit Return Line Heater.