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:
Overview
The V50 Sportswagon belongs to Volvo's versatile V-range, along with the
Volvo V70, and is produced at Volvo's plant in Ghent, Belgium alongside the V70
estate and S40 and S60 saloons. In the UK, ...
Safety & Reliability
The Volvo C30 is an Insurance Institute for Highway Safety Top Safety Pick,
which means it scores the agency's highest rating, Good, in front, side and rear
crash tests, and in a new roof-strength ...
Engine compartment, overview
The appearance of the engine compartment
may vary depending on engine model.
1 Coolant expansion tank
2 Power steering fluid reservoir
3 Engine oil dipstick
4 Radiator
5 Filler cap for engine ...
