U0300-56 Internal Control Module Software Incompatibility - Invalid/incomplete configuration: Action

Check for related DTCs stored in other modules. Check that the correct central junction box is installed to the vehicle. Using the manufacturer approved diagnostic system check and install latest relevant level of software to the central junction box
Check that the correct power steering control module is installed to the vehicle. Using the manufacturer approved diagnostic system check and install latest relevant level of software to the power steering control module