My Expedition has been giving the code P144C. I searched around and found that it has to do with the EVAP system and possibly think that it's the purge valve, but not sure. I searched around on the forum, but couldn't find any threads associated to this specifically. I've got a 2016 Expedition Limited 3.5 L Ecoboost. Any suggestions? If it is the purge valve, anybody know the part number?