PTD 000628.02 – Control Software Internal Fault

PTD 000628.02 (PTD 628.02)

Code: 000628.02

Shortcode: 628.02


This diagnostic trouble code is generated when the control software detects a faulty End of Line (EOL) parameter during power-up. The parameters are then reset to their default values, which can indicate an issue with the software or memory corruption.


When this error is detected, the control software may have limited or no functionality, impacting the overall performance of the equipment.


Reboot System:

  • Perform a system reboot to reset the control software and clear any temporary faults.

Check Software Updates:

  • Ensure that the control software is up-to-date with the latest version provided by the manufacturer.
  • Update the software if necessary.

Inspect Control Unit:

  • Check the control unit for any signs of damage or loose connections.
  • Ensure all connections are secure and in good condition.

Reprogram Control Software:

  • If the issue persists, reprogram the control software to restore correct parameters.
  • Follow the manufacturer’s guidelines for reprogramming procedures.

Consult Technical Support:

  • If reprogramming does not resolve the issue, consult technical support or a qualified technician for further diagnosis.

Monitor System:

  • After taking corrective actions, monitor the system to ensure the control software functions correctly.


Regularly updating and maintaining the control software helps prevent internal faults and ensures reliable operation. Keep a backup of critical software settings and parameters to facilitate recovery in case of errors.

Control Units: John Deere

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