OIC 000628.02 – Control Software Internal Fault

OIC 000628.02 (OIC 628.02)

Code: 000628.02

Shortcode: 628.02


This error code is generated when the control software detects an internal problem during initialization (control unit boot sequence after the ignition is switched ON).


The control software may function in a limited capacity or stop working altogether, potentially disrupting vehicle operation.


Reboot Control Unit:

  • Attempt to reboot the control unit by switching the ignition OFF and then ON again. This can sometimes resolve initialization issues.

Inspect Control Unit:

  • Check the control unit for any signs of physical damage, loose connections, or corrosion. Repair or replace any faulty components.

Update Control Software:

  • Ensure that the control software is updated to the latest version. Firmware updates may resolve internal issues detected during the boot sequence.

Run Diagnostic Tests:

  • Use diagnostic tools to run tests on the control unit. Identify any specific internal faults and take appropriate corrective actions.

Consult Manufacturer Support:

  • If the issue persists after attempting the above steps, consult technical support or the manufacturer for further diagnostics and potential replacement parts.

Monitor System Performance:

  • After addressing the issue, monitor the system to ensure that the control unit initializes correctly and that the error does not recur.


Regular updates and maintenance of the control software and hardware are crucial for preventing internal faults and ensuring reliable vehicle operation.

Control Units: John Deere

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