Description:

This diagnostic trouble code is generated under two specific conditions:

1. If the park lock does not engage despite the TIQ control software commanding the park position and the tractor’s ground speed allowing for engagement.
2. If a ground speed signal is detected even though the park position is commanded and the TIQ control software has received confirmation that the park lock is engaged.

Reaction:

If an operator error is identified, the tractor may be moved again after shifting the reverse drive lever and park lock into the neutral position.

Recommendations:

• Inspect Park Lock Mechanism:
  • Check the park lock mechanism for any signs of wear, damage, or obstruction.
  • Ensure the park lock is able to engage and disengage smoothly.
• Verify Ground Speed Signal:
  • Ensure that the ground speed sensor is functioning correctly and providing accurate signals.
  • Replace the sensor if it is found to be faulty.
• Check Wiring and Connections:
  • Inspect the wiring and connections between the park lock mechanism and the control module.
  • Repair or replace any damaged or loose connections.
• Reset Control Module:
  • Perform a soft reset of the control module by cycling the power to clear any transient errors.
• Operator Procedure:
  • Ensure that the operator follows the correct procedure by moving the reverse drive lever and park lock into the neutral position before attempting to move the tractor again.

Note:

Regular maintenance and inspection of the park lock mechanism and associated components can prevent malfunctions and ensure reliable operation.