SSU 523768.02 – Axle Detection Invalid

SSU 523768.02 (SSU )

Code: 523768.02



This diagnostic trouble code (DTC), SSU 523768.02, is triggered when the Steering System Control Unit (SSU) detects that the front axle type is missing or invalid. This indicates an issue with the axle type detection system.


When this error is detected, the steering system may not function correctly, potentially leading to operational issues and compromised vehicle control.


Verify Axle Type Configuration:

  • Ensure that the front axle type is correctly configured in the system settings.
  • Check the system documentation for the correct axle type settings and ensure they are applied.

Inspect Sensor Connections:

  • Inspect the wiring and connectors related to the front axle type detection for signs of damage, loose connections, or corrosion.
  • Ensure all connections are secure and free from contaminants.

Update Software:

  • Ensure that the SSU software is up-to-date. Apply any available firmware updates to improve system performance and compatibility.

Replace Faulty Components:

  • If the axle type detection sensors or related components 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.


  • Regular maintenance and inspection of the axle type detection system can help prevent invalid detections.
  • Ensuring the system settings are correct is crucial for the reliable operation of the steering system.

Control Units: John Deere

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