Check Engine Reset Device with Free Android App! OBDII Diagnostic Code Reader for Bluetooth Android Device --USA tested and packaged EASY: Install an app on your Bluetooth Android device. Plug GreenMax into OBDII port. Connect and Go! SAVES YOU MONEY: Diagnose and Repair your own car with the help from GreenMax! FEATURES: Reset Check Engine Light. Real-time monitoring of Engine Parameters QUALITY: Each unit Tested and Packaged in the USA! COMPATIBILITY: All makes of vehicles 2008 and newer. All imports since 1996 (except Nissan). Not for pre-2008 GM, Ford, Nissan.