Automotive OBD2 Scanner OBD Code Reader Car Diagnostic Tool Check Engine Fault Description: Read and clear diagnostic trouble codes, reset Check Engine Light, view I/M readiness for SMOG check and real-time sensor readings (O2 Readings, EOT, EGT, Throttle, Boost, Speed, Fuel Trim, etc.) using your phone or tablet very quickly.Find out why check engine light is on before visiting a Mechanic - save money by fixing simple problems yourself Various Free and paid APPs Available: Perfectly works with App such as Car Scanner, inCarDoc, Auto Doctor, Torque Lite / Torque Pro, DashCommand, OBD Fusion, Car Scanner ELM OBD2,etc. ), can turn your iPhone, iPad or Android phone/tablet into a sophisticated car scan tool. Easy to Use: Works for iOS and Android and Windows. Easy operations and stable connections plus much lower power consumption compared to WiFi, and it does not block internet access for other apps.