Originally Posted by miles26
I'll get to it asap. Thanx for the respond, but how do I get a hold of the diagnostics that they have? Could I buy those diagnostic tools??
Yes, although they are typically a couple hundred dollars or more, which is why AutoZone offers the readouts as a free service. If you did buy the diagnostic tools, they would enable you to get error codes from many cars, not just your own, but realistically they're in the area of professional tools, not something you'd need for yourself.
I mean, it'* sort of like buying your own air-conditioning evacuation and recharge equipment, or other specialty equipment: you _could_ do it (assuming it'* something you don't need special certification for), but it wouldn't pay for itself for a long, long time if you're not charging others for your services using it.
AutoZone and similar outfits offer the service for free because you're likely to be buying replacement parts or service from them as a result. Chances are that most people who come to them to get a Check Engine warning diagnosed will find that it'* something more than a loose gas cap.