SSU 523795.13 – Y49 Steering Control Valve, Calibration Error

SSU 523795.13 (SSU )

Code: 523795.13



This diagnostic trouble code (DTC), SSU 523795.13, is triggered when excessive free travel is detected during calibration of the steering control valve (Y49). This indicates play at the steering cylinder and/or valve, which can affect steering accuracy.


When this error is detected, the steering system may not calibrate correctly, leading to inaccurate steering control and potential safety issues.


Verify Hydraulic Connections:

  • Inspect the hydraulic connections at the steering cylinder and valve to ensure they are secure and free from leaks.
  • Check for any signs of play or excessive free travel in the hydraulic components.

Perform Calibration:

  • Recalibrate the steering system according to the manufacturer’s guidelines.
  • Ensure that the calibration process is followed precisely to avoid discrepancies.

Update Software:

  • Ensure that the SSU and related system software are up-to-date. Apply any available firmware updates to improve calibration accuracy.

Replace Faulty Components:

  • If any hydraulic components or the steering control valve 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 can help prevent calibration faults.
  • Ensuring proper connections and accurate calibration is crucial for reliable steering performance.

Control Units: John Deere

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