Faulty Ignition Coil
Ignition Coil harness is open or shorted
Ignition Coil circuit poor electrical connection
Engine Light ON (or Service Engine Soon Warning Light)
Cylinder 8 Ignition Circuit Short To Ground is the generic description for the P1378 Audi code, but the manufacturer may have a different description for your model and year vehicle. Currently, we have no further information
about the P1378 Audi OBDII code.