If your vehicle check engine light is illuminated, you can access the OBD-II port with a proper scanner and, odds are, it can give you a code that indicates where the issue is located.

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

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.