Faulty Fuel Injector
Fuel Injector harness is open or shorted
Fuel Injector circuit poor electrical connection
Engine Light ON (or Service Engine Soon Warning Light)
Injector Circuit Cylinder 4 Short To Ground is the generic description for the P1228 Audi code, but the manufacturer may have a different description for your model and year vehicle. Currently, we have no further information
about the P1228 Audi OBDII code.