PTI 524241.02 – Carrier Speed or Hydro Ring Gear Speed Incorrect

PTI 524241.02 (PTI )

Code: 524241.02



This error code is triggered when the speed signals for the carrier and hydro ring gear do not match the calculated speed. The ring gear speed and carrier speed are compared to each other.


The control unit commands the equipment to enter Park mode, which is recoverable.


  • Inspect Speed Sensors:
    • Check the speed sensors for the carrier and hydro ring gear to ensure they are functioning correctly.
    • Replace any faulty sensors.
  • Verify Sensor Alignment:
    • Ensure that the speed sensors are properly aligned and installed.
  • Compare Speed Readings:
    • Compare the actual speed readings with the expected speeds to identify discrepancies.
  • Recalibrate System:
    • Perform a system recalibration to ensure accurate speed calculations.


Accurate speed sensing and comparison are critical for maintaining proper transmission operation and preventing mechanical issues.

Control Units: John Deere

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