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 and messages in the display
...
Lever positions
Turn signals, lane change
position
Turn signals, position for
normal turns
High beam flash
Toggle between high and low
beams,
Home Safe lighting ...
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 ...
