Hello Swimmer and welcome to the forum! Interesting that it seems to fix itself. Since it threw the CEL on, I would take it to your neighborhood big box part place (AutoZone / Advanced Auto / O'Reilly) and they will pull the codes for free. Barring that, I would start by replacing the fuel filter (that can never hurt). If you can get your hands on a fuel pressure gauge, I would see if your pump may be getting weak. Could check the pressure both before and after the filter change. At least that is somewhere to start.