PTI 523917.07 – Synchronizer Speed Mismatch

PTI 523917.07 (PTI )

Code: 523917.07



This error code is triggered when a differential speed is detected across clutch elements, indicating a transmission malfunction.


The control unit commands the equipment to enter Park mode, which is recoverable upon power-up.


  • Inspect Clutch Elements:
    • Check the clutch elements for wear or damage that could cause a speed mismatch.
    • Replace any worn or damaged clutch components.
  • Evaluate Synchronizer Mechanism:
    • Ensure that the synchronizer mechanism is functioning correctly and is not causing differential speed issues.
  • Monitor Transmission Operation:
    • Observe the transmission operation to identify any abnormal behavior or noise that could indicate a malfunction.
  • Run Diagnostics:
    • Perform a comprehensive diagnostic check to identify the root cause of the speed mismatch.
  • Consult Technical Support:
    • If the issue persists, consult with technical support or the manufacturer for further assistance in diagnosing and resolving the problem.


Addressing synchronizer speed mismatches promptly is essential to prevent further damage to the transmission and ensure reliable equipment operation.

Control Units: John Deere

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