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:
Disabling the passenger's side front airbag
Occupant Weight Sensor (OWS) indicator light
Volvo recommends that ALL occupants (adults and children) shorter than 4 feet
7 inches (140 cm) be seated in the back seat of any vehicle with a front ...
Reporting safety defects in the U.S.
If you believe that your vehicle has a
defect which could cause a crash or
could cause injury or death, you
should immediately inform the
National Highway Traffic Safety
Administration (NHTS ...
Automatic connection
When the Bluetooth function is active and the most recently paired device is
within range, it is automatically connected. When the infotainment system searches
for the most recently paired device, ...
