Vehicle CEL DoctorThe NT301 obd2 scanner enables you to read DTCs, locate bad O2 sensors, access to emissions readiness status, turn off CEL(check engine light) or MIL, reset monitor, read live data and retrieve VIN of your vehicle.Accuracy & StreamsLive data graphing and logging. Accurately read error codes for most Worldwide cars, SUVs, light trucks and 12V diesels equipped with Obd2. Graphing live vehicle sensors data allows you to focus on any suspicious data and trend.Worthy to OwnRecommended by Mechanic Scotty Kilmer on Youtube. Codes analysis and Printer compatible. Unique PATENTED design, 2.8" color screen, Free Lifetime Update and 1-year seller assurance with EXCLUSIVE tech and service team.Smog Check HelperRead/Erase and I/M readiness hotkeys make it easy to use the car computer reader right out of the package. Red-Yellow-Green Leds and build-in speaker indicate the readiness status for confident emissions test.Home NecessityOpen to global customers. No battery required, NT301 obd scanner is charged directly from the 16pin DLC in your vehicle. It is recommended as a necessity in your toolbox and one of the best gifts for Home and Autoshop Mechanics.Please NoteDear customer, if you are not pleased with your NT301 and choose to return it, please kindly mark it unsellable to avoid an used one is resold again to other customers. Appreciate very muchWarm TipsNT301 car scanner can be used directly with no need for registration or update, as it is already the latest version. Your 's screen is with a tightly-fitting screen protector. If any scratches are found, just tear off the screen protector from the upper left or upper right corner. :)