I have been using an OBD2 scanner connected to my smartphone, but if I didn't want to pay a lot of money for an app that offers me more than just basic functions, then didn't do enough. This creader has many features and is easy to use. No batteries required as it runs on your vehicle's voltage. The screen is bright and very easy to read, plus it has a lot of features my old one didn't have unless you paid for a better app.
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