Service Engine Soon

When I started my car at the metro station this evening, the Service Engine Soon light came on. This is the second time I can recall seeing this light in the 12 years that I’ve had the car. There is no noticeable problem–no strange noise or behavior. It’s even possible that there is a malfunction with the indicator itself. Nevertheless, I called Saturn this evening and have and appointment for tomorrow morning at 7:30 to get it checked out.