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:
On and Off
In certain situations, it may be desirable to switch City Safety™ off, such as
when driving in close quarters where leaves, branches, etc. may obscure the hood
and windshield.
When the engine is ...
CHECK ENGINE Malfunction indicatorlight
On-Board Diagnostics II (OBDII): As you drive,
a computer called "OBDII" monitors your vehicle's
engine, transmission, electrical and emission
systems. The CHECK ENGINE light will
light ...
Removing the cover to access the bulbs
NOTE
Before starting to replace a bulb, see page 306.
1. Loosen the cover's four retaining screws with the tool (1) provided in the
vehicle's tool kit (see page 290). The screws sho ...
