Yes, you should. The more informed you are of your vehicle's health, the better you'll be at keeping your vehicle in top condition.

Article blurb:

"More than ever, vehicles on the road today are a combination of chips and computers. When things go wrong, as they eventually will, it’s not so much a matter of wrenching on the machinery anymore. Even if it is the engine or a timing belt or a gasket, the check engine light may be getting triggered by something else tied to that part. If you’re not a mechanic, you may be completely flummoxed as to what is going on...."