For nearly 30 years, carmakers have equipped every new vehicle sold with an OBD2 port ... repair power back into the hands of consumers. OBD2 scanners such as this one that’s just $30 at Walmart ...

Along with a portable air compressor, a pair of jumper cables, an OBD2 scanner completes the trifecta of things you should always have in your vehicle. Even if you’re out of your depth when it ...