SSU 522273.00 – Y49 Steering Control Valve, Control Signal Out of Valid Range High

SSU 522273.00 (SSU 522273.00)

Code: 522273.00

Shortcode: 522273.00


This diagnostic trouble code (DTC), SSU 522273.00, is triggered when the steering control valve (Y49) receives a control signal from the SSU control unit that is out of the valid range high (over 85% of the system voltage). This indicates an overvoltage condition in the control signal.


When this error is detected, the steering control valve may not function correctly, potentially leading to inaccurate steering control and compromised vehicle safety.


Inspect Control Signal:

  • Check the control signal from the SSU to the steering control valve (Y49) for proper voltage levels.
  • Ensure that the control signal does not exceed 85% of the system voltage.

Verify Valve Connections:

  • Inspect the wiring and connectors related to the steering control valve 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 control signal accuracy.

Replace Faulty Components:

  • If the steering control valve 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 steering system components can help prevent overvoltage conditions in control signals.
  • Ensuring the electrical system is properly regulated can avoid damage to sensitive components.

Control Units: John Deere

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