Got a check engine light? Trying to run a diagnostics check but you're still wondering what those OBD 1 codes mean? Check out what engine codes your ECU may throw out and what they mean. Get all ...

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.

If your vehicle is throwing a check engine light, but you don't have a diagnostic scanner handy, here are three tricks to try before seeing a mechanic.

When your check engine light comes on, it can be tough to figure out why. Since the mid-'90s, though, most cars are made with OBD ports that make things easier.

An OBD II system can be so sensitive to changes in engine performance that the addition of some aftermarket equipment causes the system to operate outside of those very tight operating limits.