SSU 522387.07 – Expected Steering Movement of Front Wheels is Not Detected

SSU 522387.07 (SSU 522387.07)

Code: 522387.07

Shortcode: 522387.07


This diagnostic trouble code (DTC), SSU 522387.07, is triggered when, despite a steering movement being commanded, the SSU control unit fails to detect a signal from the wheel angle sensor (WAS) or receives a signal that is too low. This indicates a failure in detecting the expected steering movement.


When this error is detected, the steering system may not respond correctly to steering commands, potentially leading to inaccurate or unresponsive steering control.


Inspect Wheel Angle Sensor:

  • Check the wheel angle sensor (WAS) for proper operation and signal transmission.
  • Ensure the sensor is securely mounted and properly connected.

Verify Sensor Signal:

  • Use diagnostic tools to verify the signal strength and accuracy from the wheel angle sensor.
  • Ensure the signal meets the required thresholds.

Update Software:

  • Ensure that the SSU and WAS software are up-to-date. Apply any available firmware updates to improve system performance and signal detection.

Replace Faulty Components:

  • If the wheel angle sensor 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 and sensors can help prevent signal detection failures.
  • Ensuring the electrical system is properly regulated can avoid interruptions in sensor operation.

Control Units: John Deere

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