I was on my way to get gas but didn't quite make it. The service engine soon light came on a few seconds before the car ran out of gas. I pulled over and walked down the street to get a gas can and some gas. After I started my car back up, the service engine soon light was still on. It runs fine, although I haven't gotten into boost after the light came on. Any suggestions before I take it to the dealer on Saturday? I don't have a code reader.