John Deere 520431.05: Isolation Shutoff Valve Circuit Current Low

The fault code indicates that the current in the isolation shutoff valve circuit is low. This may be caused by an issue with the wiring harness connected to the hydraulic valve.

1. 1

   Wiring harness to hydraulic valve

2. 2

   Isolation shutoff valve circuit

1. 1

   Inspect

   Inspect the wiring harness to the hydraulic valve for damage, wear, or loose connections.

2. 2

   Test

   Test the isolation shutoff valve circuit for proper current flow using a multimeter or diagnostic tool.

3. 3

   Repair

   Repair or replace the wiring harness or the component identified by this code as necessary.