SSU 523822.02 – SSU Calibration Fault / Wheel Angle Sensor-Flow Meter Direction Incorrect

SSU 523822.02 (SSU )

Code: 523822.02



This diagnostic trouble code (DTC), SSU 523822.02, is triggered when the Steering System Control Unit (SSU) detects that the wheel angle sensor-flow meter direction is incorrect after the manual steering portion of the SSU calibration procedure. This indicates a misalignment or incorrect configuration of the sensor and flow meter.


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


Verify Sensor and Flow Meter Alignment:

  • Check the alignment of the wheel angle sensor and flow meter to ensure they are correctly positioned.
  • Ensure that the sensor and flow meter are properly configured according to the manufacturer’s guidelines.

Perform Calibration:

  • Recalibrate the steering system following the correct procedure to ensure accurate alignment and configuration of the sensor and flow meter.
  • Ensure that the calibration process is followed precisely to avoid discrepancies.

Update Software:

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

Replace Faulty Components:

  • If the wheel angle sensor or flow meter 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 alignment and accurate calibration is crucial for reliable steering performance.

Control Units: John Deere

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