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.

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.

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.

Already an affordable option, right now you can save over $25 on this diagnostic code reader from trusted brand Ancel.