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:
Comfort and convenience
While the interior of the Volvo S40 places an emphasis on style, form has not
been allowed to take precedence over function. The fascia ergonomics have been
carefully designed and drivers will fin ...
Moving the vehicle
If the message Normal mode is displayed
when Safety mode See manual is no longer
displayed, the vehicle may be moved carefully
from its present position, if for example, it is
blocking traffic ...
Call settings
While a call is in progress, press OK/MENU or the thumb wheel on the steering
wheel keypad to access the following functions:
Mute: mute the infotainment system’s microphone.
Mobile phone: tra ...
