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:
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 ...
Cargo area cover
...
Driving Impressions
Even when equipped with the automatic transmission, the S40 2.4i accelerates
with spirit, though the engine growls when pushed. Despite a taut suspension,
ride comfort is generally satisfactory, b ...
