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:
ABS (Anti-lock brake system)
If the warning light comes on,
there
is a malfunction of the ABS system
(the standard braking system will
still function). The vehicle should
be driven to a trained and qualified
Volvo service ...
Information display
Message in the text windows
When a warning light in the instrument panel
comes on, a message is also displayed in the
text window. After you have read the message,
you can erase it by pressing b ...
Warning/information symbol in center ofthe instrument panel
This symbol shines as a red or
yellow
light depending on the nature
of the information displayed.
Red symbol – Stop the vehicle as soon as
possible in a suitable location and read the
message ...
