OIC 520426.07 – Transmission of CAN Bus Message, Fault

OIC 520426.07 (OIC 426.07)

Code: 520426.07

Shortcode: 426.07


This error code is generated when too many incorrect CAN Bus messages are transmitted, or when no messages are transmitted at all. This indicates a fault in the CAN Bus communication.


The control software may function in a limited capacity or not at all, affecting the overall operation of the vehicle.


Inspect CAN Bus Connections:

  • Check all CAN Bus connections for signs of damage, loose connections, or corrosion. Repair or replace any faulty components.

Test CAN Bus Communication:

  • Use diagnostic tools to test the integrity and functionality of CAN Bus communication. Identify and resolve any issues causing incorrect message transmission.

Check for Interference:

  • Ensure there are no sources of electromagnetic interference affecting CAN Bus communication. Shielding or rerouting cables may be necessary.

Update Control Software:

  • Ensure that the control software is updated to the latest version. Firmware updates might include improvements in handling CAN Bus communication.

Consult Manufacturer Support:

  • If the issue persists, consult technical support or the manufacturer for further diagnostics and assistance.

Monitor System Performance:

  • After taking corrective actions, monitor the system to ensure CAN Bus messages are correctly transmitted and the error does not recur.


Reliable CAN Bus communication is essential for vehicle operation. Regular inspections and maintenance can prevent high error rates and related issues.

Control Units: John Deere

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