CCU 002392.05 – Back Up Alarm Circuit Fault

CCU 002392.05 (CCU 2392.05)

Code: 002392.05

Shortcode: 2392.05


This fault code arises when the Chassis Control Unit (CCU) detects an output malfunction in the back up alarm circuit. This malfunction could affect the alarm’s ability to function correctly, potentially increasing the risk of accidents.


The functionality related to the back up alarm system is degraded, impacting the vehicle’s safety features during reverse operations.


  • Inspect Alarm Circuit: Check the back up alarm circuit for signs of damage, wear, or disconnections. Repair or replace faulty wiring or components.
  • Test Alarm Functionality: Ensure that the back up alarm operates correctly by testing its functionality under various conditions.
  • Review Electrical Connections: Verify that all connections are secure and free of corrosion, which could impact circuit performance.
  • Replace Faulty Alarm: If the back up alarm itself is found to be defective, replace it to ensure compliance with safety standards.
  • System Reset and Check: After repairs, reset the system to clear the fault code and perform a thorough check to confirm the alarm functions as intended.


Regular maintenance and checks of the back up alarm and associated circuitry are essential to ensure vehicle safety, especially in environments where reversing operations are frequent.

Control Units: John Deere

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