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:
Function
• HDC can be switched on and off with the
button in the center console. An indicator
light in the button illuminates when HDC is
activated.
• The indicator light in the
instrument
panel ...
Erasing HomeLink Buttons
To erase programming from the three Home-
Link buttons (individual buttons cannot be
erased but can be “reprogrammed” as outlined
below), follow the step noted:
1. Press and hold the two outer H ...
Reporting safety defects in Canada
If you believe your vehicle has a defect that
could cause a crash or could cause injury or
death, you should immediately inform Transport
Canada in addition to notifying Volvo Cars
of Canada C ...
