PTQ 000084.07 – Wheel Speed Detected During Transmission Calibration, Malfunction

PTQ 000084.07 (PTQ 84.07)

Code: 000084.07

Shortcode: 84.07


This diagnostic trouble code, PTQ 000084.07, is generated if the control software detects wheel speed via the CAN BUS during transmission calibration. This can occur due to a defective wheel speed sensor, incorrect wheel speed data received via the CAN BUS, or if the tractor is not positioned on a level surface during calibration, leading to potential movement of the tractor.


When this error is detected, the control software will abort the transmission calibration process. This interruption is a safety measure to prevent inaccurate calibration due to the detected wheel movement.


Check Wheel Speed Sensor:

  • Inspect the wheel speed sensor for any signs of damage or malfunction.
  • Replace the sensor if it is found to be defective.

Verify CAN BUS Data:

  • Ensure that the wheel speed data received via the CAN BUS is accurate.
  • Check the CAN BUS wiring and connections for any loose connections, damage, or corrosion. Repair or replace as necessary.

Ensure Level Surface:

  • Make sure the tractor is positioned on a completely level surface before initiating the calibration process.
  • Reattempt calibration in a different location if necessary to ensure stability.

Software Update:

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

Monitor Calibration Process:

  • After addressing the above steps, restart the transmission calibration process.
  • Observe the system to ensure the calibration completes without further errors.


  • Regular maintenance and inspection of the wheel speed sensors and CAN BUS system are crucial for preventing this type of error.
  • If the issue persists despite taking the above measures, consult technical support or the manufacturer for further assistance. It may indicate a deeper system integration issue.

Control Units: John Deere

John Deere Parts
John Deere Logo