PTQ 523966.31 – Tractor in “Come Home” Mode – INFORMATION FOR OPERATOR: Reverse Drive Lever in Position for Neutral or Park

PTQ 523966.31 (PTQ )

Code: 523966.31



This diagnostic trouble code, PTQ 523966.31, is generated when the come-home mode is activated (plug for come-home function in the COME-HOME position). The operator is informed to move the reverse drive lever to its neutral or park position to access the next stage of the come-home function.


When this error is detected, the control software shifts the transmission into neutral.


Move Reverse Drive Lever:

  • Move the reverse drive lever to the neutral or park position as indicated to proceed with the come-home function.

Inspect Reverse Drive Lever:

  • Ensure the reverse drive lever operates smoothly and correctly engages in the neutral or park position.
  • Repair or replace the lever if it is found to be defective.

Verify Come-Home Mode Activation:

  • Confirm that the come-home mode is activated intentionally and that the plug for the come-home function is correctly positioned.

Update Software:

  • Verify that the control software is up-to-date with the latest version.
  • Update the software if there are any available updates to improve functionality and error handling.

Monitor System Performance:

  • After addressing the above steps, test the reverse drive lever operation in come-home mode to ensure proper functionality.
  • Confirm that the transmission shifts correctly when the lever is in the neutral or park position.


  • Regular inspection and maintenance of the reverse drive lever and come-home function components can prevent operational issues.
  • If the issue persists despite taking the above measures, consult technical support or the manufacturer for further assistance.

Control Units: John Deere

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