This is why I hate the Forum reseting so often. we just had a thread on this today. I got my CEL fixed inside an hour, right her, by the guys on the forum.

FREE!

It may or may not be the same problem but damm, it was a good place to start.

Tighten your gas cap.

Then disconnect the negative side of the battery for two minutes.
Reconnect and start the engine. See if it goes off.

Costs you nothing but time.

Check out the comments and the time line in the SRT forum.

roadster with a stick