CLC 002378.05 – Low Current in Tail Light Circuit. John Deere Electrical Alert.

CLC 002378.05 (CLC 2378.05)

Code: 002378.05

Shortcode: 2378.05


The fault code indicates an open circuit in either the left or right tail light, resulting in no current flow. Open circuits in tail lights are typically due to broken wires, poor connections, or faulty tail light assemblies, which prevent the tail lights from operating and reduce vehicle visibility from behind.


The affected tail light will not operate, potentially decreasing the vehicle’s visibility and safety on the road.


  • Conduct Electrical Checks: Inspect the tail light wiring and connections for breaks or loose contacts.
  • Replace Faulty Components: Change out any defective tail light bulbs or assemblies.
  • System Functionality Test: After repairs, ensure the tail lights are fully operational under all conditions to maintain compliance and safety standards.


Maintaining functional tail lights is crucial for safety, especially during nighttime or adverse weather conditions.

Control Units: John Deere

John Deere Parts
John Deere Logo