CSM 523805.03 — Single Lever Control Fore-Aft Sensor Circuit Voltage High

CSM 523805.03 (CSM )

Code: 523805.03



This error code, CSM 523805.03, indicates that the voltage in the single lever control fore-aft sensor circuit is too high. This could be caused by a faulty sensor, issues with the wiring, or a malfunctioning power supply.


The function of the single lever control is disabled to prevent incorrect operations due to high sensor voltage.


Inspect Sensor:

  • Check the single lever control fore-aft sensor for any signs of malfunction. Replace the sensor if it is found to be defective.

Check Wiring and Connections:

  • Inspect the wiring and connections in the fore-aft sensor circuit for any signs of damage, loose connections, or corrosion. Secure and clean all connections.

Measure Circuit Voltage:

  • Use a multimeter to measure the voltage in the sensor circuit. Ensure that it is within the specified range and address any issues causing high voltage.

Evaluate Power Supply:

  • Verify that the power supply to the sensor circuit is functioning correctly. Replace or repair the power supply if it is causing high voltage.

Reset and Test System:

  • After resolving the issue, reset the system and perform tests to ensure the sensor voltage is within the acceptable range and the single lever control function is restored.


Maintaining the correct sensor circuit voltage is essential for accurate sensor performance and reliable system operation. Regular checks and maintenance of the sensor, wiring, and power supply can prevent high voltage issues.

Control Units: John Deere

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