BIF 002033.09 – BCU Communication Error in CAN BUS System. John Deere System Advisory.

BIF 002033.09 (BIF 2033.09)

Code: 002033.09

Shortcode: 2033.09


Error code BIF 002033.09 indicates a failure in the data transfer between the Basic Control Unit (BCU) and the BIF system. The diagnostic trouble code is activated when the reception of CAN BUS messages from the BCU is intermittent or completely fails. Common causes for such issues include loose wiring connections which disrupt the stable transmission of data.


This communication fault may lead to incorrect or missing control signals, potentially causing operational discrepancies or malfunctions in the systems controlled by the BCU.


  • Inspect and Repair Wiring Connections: Carefully examine all wiring and connections involved in the BCU to BIF communication pathway. Secure any loose connections and replace damaged wires to restore proper communication.
  • Diagnose CAN BUS Network: Employ diagnostic tools to evaluate the CAN BUS network, focusing on connections and pathways related to the BCU. This can help identify specific points of failure.
  • Update Firmware and Software: Ensure that the firmware of the BCU and the software of both the BCU and BIF are up-to-date. Updates may correct errors that interfere with message handling and transmission.
  • Test BCU Functionality: Verify that the BCU is operating correctly and is capable of sending accurate CAN BUS messages. Consider replacing the BCU if it shows signs of malfunction.
  • Comprehensive System Checks: Perform extensive diagnostics to detect and resolve any less apparent issues within the communication infrastructure that might be causing the data transfer problems.


Regular and thorough maintenance of the CAN BUS system and its components is essential to prevent communication errors. Promptly addressing issues like wiring faults and software mismatches can significantly enhance system reliability and prevent disruptions in machine operation.

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