ENGINE DIAGNOSTICS: Identify why the check engine light is on. Supports reading and clearing trouble codes, freeze frame data, I/M readiness, live sensor data, and more to help monitor vehicle health and diagnose check engine problems. (Standard OBD-II features usually free when used with proper Apps like Car Scanner ELM OBD2) COMPATIBLE WITH POPULAR THIRD-PARTY APPS: Car Scanner ELM OBD2, OBD Fusion, Torque (Android only), Infocar, BimmerCode*, BimmerLink*, OBD JScan, Dr. Prius, OBDocker, etc. Note: some Apps or in-App features require separate purchase; check product images. UNIVERSAL VEHICLE COMPATIBILITY: Compatible with most 1996+ cars and light trucks in the US and 1998+ in Canada for standard OBD-II functions. For EVs or PHEVs compatibility, refer to User Guide or contact Veepeak before purchase. COMPATIBLE WITH IOS & ANDROID: Supports Bluetooth LE for iOS and Classic Bluetooth for Android. Requires direct in-app connection for iOS devices (do not connect in Bluetooth set