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:
Introduction
All bulb specifications are listed on page 311. The following bulbs should only
be replaced by a trained and qualified Volvo service technician:
Dome lighting
Reading lights
Glove compartmen ...
Introduction
Collision Warning with Full Auto-brake and Pedestrian Detection is designed to
assist the driver if there is a risk of a collision with a pedestrian, a vehicle
ahead that is at a standstill or one ...
Warranty
As you'd expect, the Volvo S40 saloon is supported by a comprehensive
warranty. The standard mechanical warranty is three years/60,000 miles
(whichever comes first), plus there's a three-year, unl ...
