Heated oxygen sensors

The heated oxygen sensors monitor the oxygen content of the exhaust gases. Readings are fed into a control module that continuously monitors engine functions and controls fuel injection. The ratio of fuel to air into the engine is continuously adjusted for efficient combustion to help reduce harmful emissions.
See also:
Chassis
The Volvo XC90 is designed for all types of roads, irrespective of the
surface beneath the tyres or the weather conditions. Even though it was never
designed to be a serious off-roader, the Volvo ...
Faults in the system
If the information symbol illuminates and Park assist syst Service required is
shown on the information display, this indicates that the system is not functioning
properly and has been disengaged. ...
Ringing volume
In phone mode, go to Phone menu
Phone
settings
Sounds and volume
Ring
volume and adjust the volume by turning
VOL. Save the setting by pressing EXIT. ...
