EPC 524029.02 – B65 Clutch Pedal Potentiometer, Voltages at Channel 1 and Channel 2 not in the Correct Ratio

EPC 524029.02 (EPC )

Code: 524029.02



This error code, EPC 524029.02, is generated when the control unit detects a mismatch between the output signals of the clutch pedal potentiometer (B65). The voltage at channel 1 (lead 6114) must be double the voltage of channel 2 (lead 6007). This indicates a potential issue with the clutch pedal potentiometer or its circuitry.


When this error is detected, the system may not accurately interpret the clutch pedal position, leading to potential issues with clutch operation and overall vehicle performance.


Inspect Clutch Pedal Potentiometer:

  • Check the condition and functionality of the clutch pedal potentiometer (B65). Replace the potentiometer if it is found to be defective.

Verify Voltage Ratios:

  • Use diagnostic tools to measure the voltages at channel 1 (lead 6114) and channel 2 (lead 6007) of the clutch pedal potentiometer. Ensure that the voltage at channel 1 is double the voltage at channel 2.

Inspect Wiring and Connections:

  • Inspect the wiring and connections to the clutch pedal potentiometer for any signs of damage, loose connections, or corrosion. Repair or replace as necessary.

Test Potentiometer Circuit:

  • Use diagnostic tools to test the potentiometer circuit for proper functionality. Ensure that the voltage ratios are consistent and correct.

Reset and Test System:

  • After addressing the issues, reset the system and test the clutch pedal potentiometer to ensure it operates correctly and that the error code does not reoccur.


Maintaining accurate voltage ratios and proper functionality of the clutch pedal potentiometer are crucial for reliable clutch operation. Regular inspection and maintenance of the potentiometer and its circuitry help prevent issues related to voltage discrepancies.

Control Units: John Deere

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