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:
Types of lists used in the manual
Procedures
Procedures (step-by-step instructions), or
actions that must be carried out in a certain
order, are arranged in numbered lists in this
manual.
1 If there is a series of illustration ...
Automatic relocking
If the doors are unlocked, the locks will automatically
reengage (re-lock) and the alarm will
rearm after 2 minutes unless a door or the tailgate
has been opened. ...
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 Corp. ...
