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On-Board Diagnostics (OBD) is a mechanism that allows automobiles to self-diagnose and communicate any issues to the driver or technician. It is a standardized framework that was first launched in the 1980s and has since become a obligatory component in all new cars. OBD systems use a range of sensors and devices to track diverse variables of the car’s powerplant, gearbox, and other mechanisms.

What is OBD?