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:
Temporary shut-off of the air conditioning
The air conditioning is momentarily disengaged
during full-throttle acceleration or when
driving uphill with a trailer. This may result in a
temporary increase in cabin temperature. ...
Introduction
All bulb specifications are listed on page 328.
The following bulbs should only be replaced by
a trained and qualified Volvo service technician:
• Dome lighting, reading lights
• Glove compartmen ...
Interior lighting, rear
Rear reading lights
The lights are switched on or off by pressing
each respective button. ...
