Understanding OBD-II DTC Code P0203 Comprehensive Guide
Diagnostic Trouble Code (DTC) P0203 stands for “Injector Circuit/Open – Cylinder 3”. It indicates that the powertrain control module (PCM) has detected a problem with the fuel injector or the wiring for the injector on cylinder #3. The code is triggered when the PCM detects an unexpected voltage or resistance in the injector circuit that … Read more