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:
Checking and adding oil
Location of the filler cap and dipstick
Volvo recommends Castrol oil products
NOTE
Before checking the oil:
The car should be parked on a level surface.
If the engine is warm, wait f ...
Replacing the battery in the remote key
The batteries should be replaced if:
• The information symbol illuminates and
Low battery in remote control. Please
change batteries. is shown in the display
and/or
• if the locks do not react ...
C30 Changes and Models
Sharp-eyed folks will notice that the C30 has been redesigned for 2011.
Changes include a new hood, front fenders, headlights and grille. (Check out the
changes for yourself here.) The rest of the ...
