Faulty HO2S11 Sensor
Exhaust leak near HO2S11 Sensor
HO2S11 Sensor harness is open or shorted
HO2S11 Sensor circuit poor electrical connection
Engine Light ON (or Service Engine Soon Warning Light)
HO2S11 Sensor Circuit Voltage Too Low Air Leak is the generic description for the P1101 Audi code, but the manufacturer may have a different description for your model and year vehicle. Currently, we have no further information
about the P1101 Audi OBDII code.