SSU 001807.10 – B138 Steering Wheel Position Sensor, Values in Channel 1 and Channel 2 Not in Correct Ratio

SSU 001807.10 (SSU 1807.10)

Code: 001807.10

Shortcode: 1807.10


This diagnostic trouble code (DTC), SSU 001807.10, 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 discrepancy between the sensors, suggesting a problem with SID 1.


When this error is detected, the steering system may not function correctly, potentially leading to inaccurate steering input 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 Connections:

  • Inspect the wiring and connectors related to both steering wheel position sensors for signs of damage, loose connections, or corrosion.
  • Ensure all connections are secure and free from contaminants.

Update Software:

  • Ensure that the software related to the steering system 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 discrepancies between sensor readings.
  • Ensuring both sensors are functioning correctly is crucial for accurate steering input and vehicle control.

Control Units: John Deere

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