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:
Symbols in the instrument panel
WARNING
If and
come on at the same time and the brake
level is below the MIN mark in the reservoir or if a brake system-related message
is shown in the information display: DO NOT DRIVE ...
Fuel requirements
Octane rating
Minimum octane
Typical pump octane label
Volvo recommends premium for best performance,
but using 87 octane1 or above will not
affect engine reliability.
Volvo engines are desi ...
Turn signals
Turn signals
When changing lanes
1 The driver can automatically flash the turn
signals 3 times by moving the turn signal lever
up or down to the first position and releasing it.
When turning
...
