PTF 520872.02 – Control Software, Internal Error

PTF 520872.02 (PTF )

Code: 520872.02



This error code indicates an internal error when reading the internal module (EEPROM).


When this code is detected, the control software may exhibit limited or no functionality.


  • Reset Control Module:
    • Perform a reset of the control module to clear the error.
    • Follow the manufacturer’s procedure for resetting the module.
  • Check for Software Updates:
    • Ensure the control software is up to date.
    • Install any available updates to address internal errors.
  • Verify System Integrity:
    • Check the overall integrity of the control system, including power supply and grounding.
    • Ensure there are no intermittent power issues that could affect the internal module.
  • Consult Technical Support:
    • Contact technical support for assistance if the error persists.
    • Provide details of the fault for a more accurate diagnosis.


Ensuring that the control software is correctly installed and up to date is crucial for preventing internal errors. Regular maintenance and timely updates can help avoid such issues.

Control Units: John Deere

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