Color LCD display; View freeze frame data; View graphical and numeric data streams; Sensor tests; Monitored systems tests; No batteries, supply power through OBDII cable. POWERFUL FUNCTIONS: Full OBDII/EOBD Diagnostic Functions. Read & Clear DTCs, I/M Readiness Status, Read Freeze Frame, Read Datastream, Read Vehicle Information, O2 Sensor Test, On board Monitored systems Test (mode 6), Read pending DTCs, Read permanent DTCs, Turns off Malfunction Indicator Light (MIL). Support Protocol IOS9141-2, IOS14230-4, SAEJ1850, IOS15765-4 Coverage for the latest models 1 though 10. Read & Clear DTCs, Read Live Data, Identify VIN information, Views freeze frame data, Turns off Malfunction indicator Light(MIL), Display monitor test and I/M readiness test, O2 sensor &Evap system test, On-board monitor test (Mode 6), Read pending fault code, DTC code lookup. YA-101 is an upgraded version of basic obd2 scanners with feature complete support of all 10 modes of obd2; including reading and erasure of current codes, O2 Sensor Tests, On-Board Monitor Test (Mode 6), EVAP System Test (Mode 8), I/M Readiness, Vehicle Info, etc,.Help you pass the Smog check. View Freeze Frame/Live Data streams, Live O2 monitoring, Misfire, Engine Coolant Temperature and Engine RPM Data; view real-time PID data from ECM; built-in DTC lookup library with definitions. PLEASE NOTE:this tool only works on 12V cars,not NOT WORK FOR 24V truck. Turning off teh Check Engine Light: With YA101 model you never have to worry about the illumination of the Check Engine Light as it successfully turns off the said light, clears the relevant code and also reset the display. Smog Detector: YA101 scanner also features the capability to foretell whether your vehicle would pass or not in the smog test even before you take it to a test center. Extensive trouble code catalogue: The device boasts an expansive catalogue of trouble codes along with their detailed descriptions to ensure tech peak performance of you're vehicle all the time. Simplicity of Design: A good scanner must be easy to operate. It features the simplest of design wif only a couple of buttons which makes it easier to read and clear the codes in a faster way.