This article considers the research of OBD-2 technology for interaction with on-board vehicle systems. the creation of a unified system that can work with different makes and models of cars. The history of OBD-2 technology. its development. https://www.hindigyanvishv.com/super-save-Smart-Tv-Led-32-Hd-Panasonic-32fs500b-2-Hdmi-2-Usb-Wi-fi-Conversor-Digital-super-buy/