What is an OBD scanner?

An OBD scanner, short for On-Board Diagnostics scanner, is a device used to interface with a vehicle's onboard computer system. It is designed to read and diagnose various parameters and error codes. By connecting the scanner to the vehicle's OBD port, usually located under the dashboard, users can retrieve real-time data and identify potential issues within the vehicle's engine, transmission, exhaust system, and other important systems. OBD scanners can display live data streams, such as RPM, coolant temperature, oxygen sensor readings, and more. Additionally, they can clear diagnostic trouble codes (DTCs) and reset the vehicle's check engine light. OBD scanners make it convenient and accessible for both automotive professionals and enthusiasts to perform diagnostics and perform routine maintenance on their vehicles.