PTA 524218.12 – Park Lock, Fault

PTA 524218.12 (PTA )

Code: 524218.12



This diagnostic trouble code is generated when the PTA control software detects that the park lock is engaged, even though Power Zero is commanded by the TIA control software at the same time.


Power train is interrupted when this diagnostic trouble code is active, indicating a critical issue with the park lock system.


Inspect Park Lock System:

  • Verify that the park lock system is functioning correctly.
  • Repair or replace any faulty components.

Check Power Zero Command:

  • Ensure that the Power Zero command from the TIA control software is being correctly interpreted.
  • Verify the TIA control software settings and update if necessary.

Examine Wiring and Connectors:

  • Inspect all wiring and connectors associated with the park lock system for signs of damage or disconnection.
  • Repair or replace any damaged components to ensure proper electrical connections.

Consult Technical Support:

  • If the issue persists, consult technical support or the manufacturer for further diagnosis and assistance.


Ensuring the park lock system and Power Zero command work in harmony is crucial for vehicle operation. Regular inspection and maintenance can help prevent these issues.

Control Units: John Deere

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