XC90 AWD V8-4.4L VIN 85 B8444S (2005)
Climate Control Exhaust Gas Sensor: Testing and Inspection
Air quality sensor, checking
As the illustrations in this service information are used for different model years and / or models, some variation may occur. However, the essential
information in the illustrations is always correct.
Removing the air quality sensor
Remove the plenum chamber. See Cowl, replacing See: Body and Frame/Cowl/Cowl Moulding / Trim/Service and Repair.
Checking the air quality sensor
Start the car engine with the ECC automatic button in the ON position.
Spray a little rust solvent or windshield washer fluid from a spray bottle into the opening for the air quality sensor.
Note! Use only a small amount of rust solvent or windshield washer fluid.