BIF 000639.14 – Vehicle CAN BUS Communication Disruption. John Deere System Advisory.

BIF 000639.14 (BIF 639.14)

Code: 000639.14

Shortcode: 639.14


Error code BIF 000639.14 is triggered when the control unit detects an excessively high error rate in the CAN BUS system communications. This condition indicates that there are too many incorrect messages being transmitted or received, or there is a general connectivity problem within the vehicle’s CAN BUS network. Such disruptions can lead to miscommunications and malfunctions in various vehicle systems that rely on these signals for operation.


To prevent further issues, the control unit may temporarily limit the functionality of affected systems or components until the communication integrity is restored.


  • Check and Secure Connections: Inspect all CAN BUS connections for looseness, corrosion, or damage. Secure and clean connections to ensure reliable communication.
  • Analyze Error Messages: Utilize diagnostic tools to identify specific error messages and patterns that can help pinpoint the source of the problem.
  • Update or Reconfigure Software: Ensure that all software interfacing with the CAN BUS is up-to-date and correctly configured. Adjust settings or update software as needed to improve communication compatibility.
  • Test CAN BUS Components: Systematically test components such as terminators, transceivers, and other network-related hardware to isolate defective parts.
  • Comprehensive Network Testing: Perform thorough testing of the CAN BUS network to ensure that all components are functioning correctly and interacting as expected.


Regular maintenance and diagnostic checks of the CAN BUS system are essential to maintaining the operational integrity of the vehicle’s network. Early detection and resolution of communication issues can prevent more significant disruptions and ensure the longevity and reliability of the system.

Control Units: John Deere

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