MS309 Pro Professional OBDII Car Diagnostic Scanner. This easy-to-use tool helps diagnose engine problems quickly by reading and clearing trouble codes from your vehicle’s computer system. Compatible with most 1996 and newer OBDII / EOBD vehicles including cars, SUVs, and light trucks. Perfect for DIY car owners, mechanics, or anyone who wants to check engine issues before going to a repair shop. Features: Reads and clears Check Engine Light (CEL) codes Displays live PCM data stream Retrieves vehicle diagnostic trouble codes (DTCs) Shows code definitions directly on the screen Plug-and-play design – no batteries required Compact and portable New in box