Ford P0203 OBD-II Trouble Code Definition: P0203 Fuel Injector, Cylinder 3 Activation P0203 Ford OBD-II Trouble CodeDescription: OBD Trouble Code P0203 Injector Circuit/Open – Cylinder 3 What does the code mean? OBD-ii Code P0203 definition: P0203 means that the PCM detected a fault in the injector or the wiring to the injector. It monitors the injector […]