A code reader for your car can mean the difference between dropping everything and heading for the mechanic and letting that warning light ride a little bit.

Pair the code reader Locate the OBDII 16-pin universal Data/Diagnostic Link Connector or data port. The data port is usually under the dashboard on the driver’s side of the car, near the footwell.

We'll explain how to use an OBDII code reader to clear Cummins fault codes, and we'll also explain how to clear the codes if you don't have access to a scan tool.

Looking for information on how to use an automotive diagnostic tool? Our team of experts narrowed down the best tips on how to use an automotive diagnostic tools.

Did your vehicle's check-engine light just pop on? An OBD-II scanner can provide some direction. We tested a handful to find the best for different situations.

The second character identifies whether the fault code is a generic code or a manufacturer specific code. A generic code is the same on all OBD-II equipped vehicles no matter the manufacturer.

Get the read on your car issues with an OBD-II code reader. I tried out some of the top brands on the market to find the best one for your needs.

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At its core, the Icon T10 is an OBDII code reader, and it does all the standard things these tools do. You connect the T10 to OBDII-equipped vehicles (those built after 1996) via the OBDII port ...

We recently got our hands on the new GoTech mobile OBD-II diagnostic tool and put it through its paces on several trucks in our fleet. The GoTech is more than just a code reader, though.