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:
Wiper blades
The windshield wiper blades are different lengths. The blade on the driver’s
side is longer than the one on the passenger side. ...
General information
Warning symbols in the instrument panel
As an enhancement to the three-point seat belts, your Volvo is equipped with
a Supplemental Restraint System (SRS). Volvo's SRS consists of seat belt p ...
Disconnecting an external device
The external device is automatically disconnected from the audio system if it
is moved out of range ...
