Xiauodo OBD2 Scanner: Plug-and-Play Car Diagnostic Tool with Voltage Test and 30,000+ Code Database for All OBDII Vehicles The Xiauodo OBD2 Scanner is a compact yet powerful diagnostic tool designed for both DIY car owners and professional mechanics seeking accurate, real-time insight into vehicle health. Built to support all OBDII protocols, this plug-and-play car code reader is compatible with most vehicles manufactured since 1996—including U.S., European, and Asian models—making it an essential addition to any toolbox.