RLC 002390.05 – License Plate Light, Current Too Low

RLC (RLC 2390.05)


Shortcode: 2390.05


This diagnostic trouble code is generated if the control software registers that the current at the output to the license plate light is too low. This indicates that the circuit is open.


When this error is detected, the control software may experience limited or no functionality of the license plate light.


  • Inspect License Plate Light Circuit:
    • Check the wiring and connectors associated with the license plate light for signs of open circuits. Look for disconnected or loose connections. Repair or replace any compromised wiring or connectors.
  • Test License Plate Light:
    • Test the license plate light to ensure it is functioning correctly and drawing the proper current. Replace any faulty light components.
  • Verify Power Supply:
    • Ensure the power supply to the license plate light is stable and within the specified range. Inspect for any issues that could cause a drop in current.


An open circuit can prevent the license plate light from functioning properly. Regular inspection and maintenance of the electrical system are essential to ensure reliable operation.

Control Units: John Deere

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