SSU 523824.10 – B138 Steering Wheel Position Sensor, Voltage in Channel 1 and Channel 2 Not in Correct Ratio

SSU 523824.10 (SSU )

Code: 523824.10



This diagnostic trouble code (DTC), SSU 523824.10, is triggered when the values read by the steering wheel position sensors SID 1 and SID 2 differ by more than 20. This indicates a problem in steering input device SID 2.


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


Verify Sensor Calibration:

  • Ensure that both steering wheel position sensors SID 1 and SID 2 are correctly calibrated.

Inspect Sensor Alignment:

  • Check the physical alignment of the steering wheel position sensors to ensure they are correctly positioned.

Verify Sensor Signals:

  • Use diagnostic tools to verify that the voltage ratio between channel 1 and channel 2 meets the required specifications.
  • Ensure that the signals from both sensors are consistent and within the expected range.

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 either of the steering wheel position 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 steering system components can help prevent voltage ratio discrepancies.
  • Ensuring both sensors are functioning correctly is crucial for accurate steering input and vehicle control.

Control Units: John Deere

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