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:
Limitations
In certain situations, DAC may provide warnings
even if the driver’s driving pattern has not
become erratic.
• if the driver is testing the LDW function
• in strong crosswinds
• on grooved road ...
Indicator and warning symbols
Low oil
pressure
If the light comes on while driving, stop the
vehicle, stop the engine immediately, and
check the engine oil level. If the oil level is normal
and the light stays on after ...
Unleaded fuel
Each Volvo has a three-way catalytic converter and must use only unleaded gasoline.
U.S. and Canadian regulations require that pumps delivering unleaded gasoline be
labeled "UNLEADED". O ...