Reads and clears engine-related fault codes with over 42,000 built-in code definitions Displays live data such as RPM, coolant temperature, fuel trim, and oxygen sensor readings Includes I/M readiness check to see if a vehicle is ready for a smog or emissions test Compatible with most 1996 and newer U.S. OBD2 vehicles and many 2000 and newer EU/Asian models Features a 2.4″ color display and plugs directly into the vehicle’s OBD2 port with no app needed