I'm a mechanic and I can honestly say this is a great piece of equipment. The plastic feels a little cheap and takes some getting used to, but otherwise a good product for the price. The guy I work with bought obd2 for $100 and no doubt obd2 is much better. This little device is a great inexpensive product to use to find out what's wrong with the car you're working on. If you have a newer car it's probably having exhaust leak issues (which is mostly a good thing), but turning on the check engine light eliminates some things that could be serious, so this is a good eraser. See also Emission Leak Code.
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