US Patent 11948409 System and method for processing diagnostic message of vehicle

A system for processing a diagnostic message of a vehicle includes a first external diagnosis device included in a D domain, an internal diagnosis device included in an M domain, a second external diagnosis device included in a G domain, and a vehicle gateway transmitting a diagnostic result corresponding to a request for diagnosis only to a domain including a diagnosis device requesting the diagnosis when the request for the diagnosis is received from one of the first external diagnosis device, the internal diagnosis device, or the second external diagnosis device.