Error code 406 for actual online stuff means a client error response that a server sends to a client when it can't produce a response that matches the client's preferences. For CyberDoki, that's not what his error code 406 is... CyberDoki's Protocol Error Code 406 means something that went haywire in his system. For example, snapped wire, short circuit, damaged memory board, microchip failure, weapons down, etc. If CyberDoki goes into error code 406, it means his systems have to be shut down and be fixed and restarted before going back in service. CyberDoki as well has 1,093 errors that rarely happen. 406 is common due to him fighting a lot.