RPT 000186.17 – Rear PTO Speed Sensor, Speed Too Low

RPT 000186.17 (RPT 186.17)

Code: 000186.17

Shortcode: 186.17


This diagnostic trouble code, RPT 000186.17, is generated when the RPT control software detects that the rear PTO speed is too low. Insufficient speed can indicate a malfunction in the PTO system or improper operation of the connected implement.


When this error is detected, the functionality of the rear PTO is significantly limited or entirely non-functional, affecting the operation of the connected implement.


Inspect Rear PTO Speed Sensor:

  • Check the rear PTO speed sensor for any signs of malfunction.
  • Ensure the sensor is securely mounted and connected properly.

Verify Implement Operation:

  • Ensure that the implement connected to the rear PTO is operating correctly and not causing the PTO to run at low speeds.
  • Adjust the implement settings if necessary.

Check PTO Clutch:

  • Inspect the rear PTO clutch for signs of excessive slip or wear.
  • Adjust or replace the clutch if necessary.

Update Control Software:

  • Ensure that the control software is updated to the latest version.
  • Apply any available patches or updates that address speed regulation issues.

Consult Technical Support:

  • If the problem persists, consult with technical support or the equipment manufacturer for further assistance.
  • Provide detailed error logs and speed measurements to aid in troubleshooting.

Monitor PTO System Performance:

  • After addressing the issue, monitor the rear PTO system to ensure it operates correctly and within the specified speed range.
  • Keep detailed records of any further speed-related errors.


Low speed in the rear PTO can impair the performance of the connected implement and the overall efficiency of the equipment. Regular maintenance and proper use of the PTO and implement can prevent such issues.

Control Units: John Deere

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