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:
Oil pressure warning light
If the light comes on while
driving,
stop the vehicle and then
stop the engine immediately and
check the engine oil level. If the light stays on after
restart, have the vehicle towed to the nea ...
Environment
Volvo cares passionately about environmental protection, whether it's in
reducing pollutants from its vehicles, or cutting pollutants entering the car.
The well-being of people is at the core of e ...
Cold weather precautions
If you wish to check your vehicle before the
approach of cold weather, the following advice
is worth noting:
• Make sure that the engine coolant contains
50 percent antifreeze. Any other mixture
...
