AIC 523804.03 – High Voltage in Multi-Function Lever Lateral Sensor Circuit. John Deere System Alert.

AIC 523804.03 (AIC )

Code: 523804.03



The error code AIC 523804.03 is triggered by an abnormal voltage condition in the lateral sensor of the multi-function lever, where the sensor voltage exceeds the threshold of 4.80 volts. This high voltage condition may indicate a fault within the sensor itself, such as an electrical short or an issue with the sensor’s power supply that could lead to inaccurate readings or malfunctions.


In response to this high voltage scenario, the control unit has disabled the function associated with the lateral sensor on the multi-function lever. This action prevents potential misoperations or further damage to the system, ensuring safety and operational integrity.


  • Inspect the Lateral Sensor and Associated Wiring: Examine the lateral sensor and its wiring for any signs of damage, corrosion, or improper connections that could contribute to high voltage levels.
  • Measure and Diagnose Sensor Voltage: Use diagnostic tools to measure the voltage output from the lateral sensor. Check for voltage inconsistencies or spikes that deviate from standard operating levels.
  • Identify and Rectify Electrical Faults: Look for sources of electrical interference or faults within the circuit, such as shorts to power or defective components, and make necessary repairs or replacements.
  • Test Sensor Functionality: After addressing any electrical issues, re-test the lateral sensor to ensure it operates within the correct voltage range and responds accurately to the lever’s movements.
  • System Reset and Comprehensive Testing: Reset the control system to clear any fault states and perform extensive testing to confirm that the issue has been resolved and that the multi-function lever functions properly across all settings.


Regular monitoring and maintenance of sensor circuits are critical to the safe and efficient operation of agricultural machinery. Ensuring that all sensors and electrical systems function within specified parameters can prevent operational disruptions and extend the life of the equipment. Prompt attention to electrical issues like high voltage can avert more significant problems and maintain system reliability.