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:
Unleaded fuel
Each Volvo has a three-way catalytic converter
and must use only unleaded gasoline. U.S. and
Canadian regulations require that pumps delivering
unleaded gasoline be labeled "UNLEADED". ...
Engine compartment
A - Engine compartment, upper
B - Engine compartment, front
C - Engine compartment, lower
Positions
These fuses are all located in C the engine compartment box. Fuses in are located
under A.
...
All Wheel Drive – AWD
Your Volvo can be equipped with permanent All Wheel Drive, which means that power
is distributed automatically between the front and rear wheels. Under normal driving
conditions, most of the eng ...
