CLAAS A0BFh: Supervisor error when starting. Replace the 5 valve

The tractor experiences a supervisor error during startup, and the supervisor does not start properly. The error can be cleared, but if it reoccurs, the 5 valve is suspected to be the cause. The 5 valve is reported to return to neutral.

1. 1

   Check if the error can be cleared and if it reoccurs after restarting the tractor.

2. 2

   Verify the condition and operation of the 5 valve.

1. 1

   Clear the error

   Follow the procedure to clear the fault code as described in the service manual.

2. 2

   Restart the tractor

   Attempt to start the tractor again after clearing the error to see if the issue persists.

3. 3

   Replace the 5 valve

   If the error reappears, replace the 5 valve as indicated in the source.