The iCarsoft i820 OBDII Code Reader offers OBDII FUNCTION, including: *Read Codes *Erase Codes *Read live PCM DataStream:View & Graph Live Data in Color Graphing and blazing fast refresh rate for better graphing and live data readings. *I/M Readiness -- I/M Readiness indicate whether or not the various emissions-related systems on the vehicle are operating properly and are ready for Inspection and Maintenance testing. *Freeze Frame -- When an emission-related fault occurs, certain vehicle conditions are recorded by the on-board computer. This information is referred to as freeze frame data. *On-Board Monitoring -- This function can be utilized to read the results of on-board diagnostic monitoring tests for specific components/systems. *Evap System Test -- The EVAP test function lets you initiate a leak test for the vehicle's EVAP system. Before using the system test function, refer to the vehicle's service repair manual to determine the procedures necessary to stop the test. *Retrieve generic (P0, P2, P3, and U0), manufacturer specific (P1, P3, and U1) codes and pending codes. What's in the Box of iCarsoft i820 OBDII Code Reader? 1*User's Manual: Instructions on tool operations. 1*PC Connecting Cable:Allows easy update via a PC and an internet connection. 1*Main Cable:Connects tools with Vehicles to use. 1*Nylon Carry Case 1*Packaging