TURN OFF CHECK ENGINE LIGHTAutel MS300 OBD2 scanner is an easy-to-use plug-and-play check engine code reader that read and clear codes. This little code scanner retrieves generic (P0, P2, P3, and U0), manufacturer specific (P1, P3, and U1) codes, and pending codes. It can easily find out what caused the check engine light on, turn off MIL light.NOTE: It does not supports full engine system, if need, pls consider ML629/ MK808BT PRO, etc. FREEZE FRAME DATA FOR ACCURATE DIAGNOSISThis MS300 check engine code reader comes with viewing freeze frame function that enables you to retrieve data recorded in the ECU of the condition under which the fault occurs to figure out why the check engine light is on and cut down test drive cycle verification time. It includes important engine parameters such as RPM, vehicle speed, mass airflow, engine load, fuel pressure, short/long term fuel trim, engine coolant temperature and etc. READINESS STATUS TO PASS SMOG CHECKThe Autel MS300 car di