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Home >> Audi >> 2021 >> A4 Quattro Premium Plus, 2.0L Eng VIN B >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> A/C Compressor >> Air Conditioning >> 87 Air Conditioning >> Additional Components For Control And Regulation >> Humidity Sensor In Fresh Air Intake Duct -G657- /Air Quality Sensor -G238-, Removing And Installing >> Removing

Humidity Sensor In Fresh Air Intake Duct -G657- /Air Quality Sensor -G238-, Removing And Installing: Removing

-- Switch off the ignition.

-- Loosen the right front plenum chamber cover -F- from the vehicle and carefully lift slightly. Refer to PLENUM CHAMBER COVER, REMOVING AND INSTALLING .

-- Rotate the Air Quality Sensor -G238- /Humidity Sensor in Fresh Air Intake Duct -G657- -A- approximately 90° and remove it from the mount on the fresh air intake -E-.

GWWA87-12159Courtesy of AUDI OF AMERICA, LLC

-- Disconnect the connector -B- from sensor -A-.

TIP