Check Engine

While driving to work, my car's "Check Engine" light came on, suddenly and for no discernible reason. When I got to work, I paged through the manual, and it suggested an issue with the emissions. I called the dealership, and I made an appointment (thankfully coinciding with its regular check up).

By the time my appointment rolled around, the light had gone off.

Of course, a few days later, the light went on again. This time, I paged through the AudiWorld.com web pages, and searched the forums. I found multiple entries about the Check Engine light. The most common cause is a a loose gas cap.

So I removed the gas cap, and reseated it. The "Check Engine" light went off the next day.

How in the world did we ever function without the World Wide Web?