SSU 000639.14 – Vehicle CAN BUS, Incorrect Message

SSU 000639.14 (SSU 639.14)

Code: 000639.14

Shortcode: 639.14

Description:

This diagnostic trouble code (DTC), SSU 000639.14, is generated when the control unit receives too many incorrect CAN BUS messages or detects a general problem in the connection to the vehicle CAN BUS. This indicates a communication issue with a significant number of incorrect messages on the CAN BUS network.

Reaction:

When this error is detected, the equipment may experience communication errors, leading to reduced functionality or incorrect operation of systems dependent on CAN BUS communication.

Recommendations:

Verify CAN BUS Integrity:

  • Inspect the CAN BUS wiring and connectors for any signs of damage, loose connections, or corrosion.
  • Use diagnostic tools to check for continuity and proper voltage levels in the CAN BUS lines.

Check for Interference:

  • Ensure that there are no sources of electrical interference near the CAN BUS wiring that could be causing errors.
  • Verify proper shielding and grounding of the CAN BUS network.

Update Software:

  • Ensure that all related system software is up-to-date. Apply any available firmware updates to improve CAN BUS communication protocols.

Replace Faulty Components:

  • If any components within the CAN BUS network are found to be defective, replace them with new, genuine parts.

Consult Technical Support:

  • If the error persists after performing the above steps, consult technical support or the manufacturer for further assistance in identifying and resolving the issue.

Note:

  • Regular maintenance and inspection of the CAN BUS wiring and connected components can help prevent the occurrence of incorrect messages.
  • Keeping the system firmware up-to-date ensures compatibility and reliability of the vehicle’s communication systems.

Control Units: John Deere

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