Faulty Fuel Injector #4
Fuel Injector #4 harness is open or shorted
Fuel Injector #4 circuit poor electrical connection
Engine Light ON (or Service Engine Soon Warning Light)
Fuel Injector Circuit Cylinder 4 Electrical Malfunction is the generic description for the P1204 Audi code, but the manufacturer may have a different description for your model and year vehicle. Currently, we have no further information
about the P1204 Audi OBDII code.