2017 for explorer with the 3.5 ecoboost twin turbo P144c code came up for a few weeks changed evap purge valve on the tank and nothing changed a few weeks later i was going down the road and a injector stuck open dumping fuel into cylinder changed it reset kam now i still have p144c (evap purge flow during boost) however i got 2 new codes P0420 P0430 (catalyst system efficiency below threshold bank 1 and 2)