DTC P0201: Injector No. 1 Control Circuit: Description

Circuit is monitored when battery voltage is more than 10 volts, Automatic Shutdown (ASD) relay is energized, and engine speed is less than 3000 RPM. DTC will set when no inductive spike is sensed after injector turns off. Possible causes are: ASD relay output circuit open, defective injector, injector driver circuit open or shorted to ground or defective PCM.