Faulty Barometric Pressure Sensor
Barometric Pressure Sensor harness is open or shorted
Barometric Pressure Sensor circuit poor electrical connection
Engine Light ON (or Service Engine Soon Warning Light)
Barometric/manifold Pressure Signal Ratio Out of Range is the generic description for the P1553 Audi code, but the manufacturer may have a different description for your model and year vehicle. Currently, we have no further information
about the P1553 Audi OBDII code.