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:
Owner maintenance
Periodic maintenance requirements and intervals
are described in your vehicle's Warranty
and Service Records Information booklet.
The following points can be carried out
between the normally sch ...
Emission inspection readiness
What is an Onboard Diagnostic System (OBD II)?
OBD II is part of your vehicle's computerized engine management system. It stores
diagnostic information about your vehicle's emission control ...
Changing engine oil and oil filter
Refer to the Warranty and
Service Records Information booklet for information
on the oil change intervals.
NOTE
Volvo does not recommend the use of oil
additives.
Synthetic oil is not used when ...