2000 Ford Mustang had trouble starting, runs fine now after two tries but SES light is on
This is a 2000 Ford Mustang. It took two tries to start this morning, but otherwise is fine, but the SES light is on. I added oil yesterday and gas today, and both oil and gas caps are tight. The battery was replaced in December 2015. I'd like to see if I can get an idea what's wrong before I bring it in. Does anyone have any ideas what I could check?