Air Cleaner and Throttle Housing.
Mass Air Flow Sensor.

MASS AIR FLOW SENS

Fits S60, S90, V60, V60 Cross Country, V90, V90 Cross Country, XC40, XC60, XC90

Variant code: CD02.
Mass Air Flow Sensor
If the mass air flow sensor or MAF meter in your 2016 Volvo XC90 is failing, you’ll notice in addition to the check engine light that your engine may crank and not start, or that the engine speed surges at idle.