SSU 000524.09 – Incorrect CAN BUS Message, Gear Selection from EPC

SSU 000524.09 (SSU 524.09)

Code: 000524.09

Shortcode: 524.09


This diagnostic trouble code (DTC), SSU 000524.09, is generated when the gear selection information from the Electronic Power Control (EPC) is not recognized on the CAN BUS. This indicates a communication issue between the EPC and the rest of the system.


When this error is detected, the equipment may not correctly display or process gear selection data, which can affect operations that rely on accurate gear information.


Verify CAN BUS Communication:

  • Inspect the CAN BUS wiring and connectors for any signs of damage, loose connections, or corrosion.
  • Use diagnostic tools to check for continuity and proper voltage levels in the CAN BUS lines.

Check Gear Selection Data:

  • Ensure that the gear selection data from the EPC is correctly transmitted and recognized by the system.
  • Check the EPC for proper configuration and operation.

Update Software:

  • Ensure that the EPC and related system software are up-to-date. Update the software to include the latest diagnostic trouble codes and communication protocols.

Replace Faulty Components:

  • If any components within the CAN BUS network are found to be defective, replace them with new, genuine parts.

Consult Technical Support:

  • If the error persists after performing the above steps, consult technical support or the manufacturer for further assistance in identifying and resolving the issue.


  • Regular maintenance and inspection of the CAN BUS wiring and connected components can help prevent this issue.
  • This code may sometimes be triggered by intermittent faults in the CAN BUS communication, so monitoring the system for any recurrence is crucial.

Control Units: John Deere

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