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Your inexpensive OBD-II scanner can tell you more than why the check-engine light is on

An OBD-II scanner can do much more than read check-engine codes. These five features can help you diagnose problems faster ...
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What Is an OBD2 Scanner and How Does It Work?

Your check engine light can come on a host of reasons, ranging from a loose gas cap to a faulty engine component. If you see a light illuminated on your dashboard, you can use an OBD2 scanner to ...