Review on Enhance Car Diagnostics with the thinkcar ThinkOBD OBD2 Scanner: Universal Diagnostic Scan Tool for All OBDII Cars after 1996 by Isaac Shankar

Great little scanner. Plug it into your compatible car's OBDii port, start the car, select DIAGNOSTICS and this will tell you what fault codes you have, if any. It can also give you live data while driving, but the values of what it tells you are stored in the HELP section, which cannot be downloaded for offline use. You can only access this information when connected to the device. Without better documentation, I can only give four stars.