RLC 002000.09 – Incorrect CAN Bus Message, Information from ECU Control Unit

RLC 002000.09 (RLC 2000.09)

Code: 002000.09

Shortcode: 2000.09


This diagnostic trouble code is generated if a data transfer problem occurs between the ECU control unit and RLC control software. Reception of one, several, or all of the CAN messages transmitted by the ECU is intermittent or non-existent, possibly due to a loose wire or other issues in the CAN bus.


When this error is detected, the control software may experience limited or no functionality, affecting the performance or operation of specific electronic control systems within the equipment.


  • Inspect CAN Bus Connections:
    • Check all CAN bus connections between the ECU and RLC control software for signs of damage, loose connections, or corrosion. Secure or replace any compromised connectors.
  • Test CAN Bus Network:
    • Use a CAN bus analyzer to test the network for intermittent connections or data transfer issues. Identify and resolve any faults found during the analysis.
  • Verify Wiring Integrity:
    • Inspect the wiring harness for any signs of wear, damage, or corrosion. Repair or replace any compromised wiring.
  • Check for Electrical Interference:
    • Ensure there are no sources of electrical interference near the CAN bus network that could be causing communication errors.
  • Update Control Software:
    • Make sure the control software is updated to the latest version to address any potential issues with CAN message processing.


Consistent communication between the ECU and RLC control software is crucial for the reliable operation of the equipment. Prompt diagnosis and resolution of CAN bus issues are essential to maintain system functionality.

Control Units: John Deere

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