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:
Washing the car
The following points should be kept in mind when washing and cleaning the car:
The car should be washed at regular intervals since dirt, dust, insects
and tar spots adhere to the paint and may ...
Cabin air filter
Replace the cabin air filter with a new one at
the recommended intervals. Please refer to
your Warranty and Service Records Information
booklet, or consult a trained and qualified
Volvo service te ...
Driving after a collision
If the vehicle has been involved in a collision,
the text Safety mode See manual may
appear in the information display. This indicates
that the vehicle's functionality has been
reduced.
NOTE
...
