PTQ 522150.14 – INFORMATION FOR OPERATOR: Engine Overload Protection

PTQ 522150.14 (PTQ )

Code: 522150.14



This diagnostic trouble code, PTQ 522150.14, is generated when the control software detects that the engine speed is too high for the requested gear or group. To protect the engine and transmission, the control software prevents the requested gear or group shift.


When this error is detected, the control software prevents the requested gear or group shifting to avoid engine overload.


Reduce Engine Speed:

  • Reduce the engine speed to within the acceptable range before attempting to shift gears or groups.
  • Monitor engine speed during operation to prevent exceeding recommended limits.

Verify Gear and Group Selection:

  • Ensure that the selected gear or group is appropriate for the current engine speed and load conditions.
  • Avoid selecting high gears or groups when the engine speed is too high.

Inspect Throttle Control:

  • Check the throttle control system for any signs of malfunction or improper adjustment.
  • Repair or adjust the throttle control as needed to ensure proper engine speed regulation.

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 system accuracy and error handling.

Monitor System Performance:

  • After addressing the above steps, test the gear and group shifting operation to ensure proper functionality.
  • Confirm that the engine speed remains within acceptable limits during operation.


  • Regular inspection and maintenance of the engine and transmission systems are crucial to prevent overload conditions.
  • 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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