Well, no codes stored. I dont know if that is the difference between the engine light coming on and the wrench light coming on, but thats what I got. The wrench light comes on when it happens, goes back off after restart. So now I dont know what to do. I dont feel like throwing parts at it to try to fix it. Really frustrated. I can't force the issue to duplicate, which is what the dealer wanted to do. They wanted to keep it, dont really have the time or pocketbook for that.