CCU 000567.05 – Front Differential Lock Solenoid Circuit Fault

CCU 000567.05 (CCU 567.05)

Code: 000567.05

Shortcode: 567.05


This code is triggered when the Chassis Control Unit (CCU) detects an issue with the front differential lock solenoid circuit. The fault may involve an open circuit, a short, or an over-temperature condition, which can affect the solenoid’s operation.


Due to this circuit fault, the functionality of the front differential lock is degraded. This may impact the vehicle’s ability to maintain traction and stability under various operating conditions.


  • Inspect Solenoid and Wiring: Examine the front differential lock solenoid and its wiring for signs of damage, corrosion, or disconnection. Repair or replace faulty components as needed.
  • Check for Over-Temperature Issues: If an over-temperature condition is suspected, investigate potential causes such as excessive load or inadequate cooling.
  • Electrical Testing: Conduct electrical tests such as continuity testing and voltage checks on the solenoid circuit to pinpoint the specific nature of the fault.
  • Replace or Repair Faulty Solenoid: If the solenoid itself is found to be defective, replace it to restore proper functionality.
  • Functional Test: After repairs, perform a functional test to ensure that the front differential lock operates correctly under normal conditions.


Maintaining the differential lock system in good working order is crucial for ensuring optimal traction and stability. Regular checks and maintenance of the solenoid and its associated circuits can prevent performance issues and ensure reliable operation.

Control Units: John Deere

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