I am sure you will agree, one of the most dreaded images, for a car owner, is when the check engine light comes on. When that happens, it could be anything from a faulty sensor, to something serious, which is why having a good scan tool may be critical, as it will help determine whether it is a cheap and simple fix or something that may cost thousands of dollars. And although an onboard diagnostics scanner will not fix everything, it will eliminate any uncertainty, as to what problem your car has. This is exactly why we have compiled a short list, in order to help you decide, which is the best OBD2 scanner for you.