Hello
mrsalbert, my name is
JShreader. Thank you for choosing
fixya.com
Depending on which
oxygen sensor you are looking for...there are several of them throughout the Exhaust System. I will start out by giving you a brief description of what and
oxygen sensor is, and they're general purpose.
DESCRIPTION
Four Heated Oxygen Sensors
(HO2S) are
mounted
in the exhaust system where they monitor
the oxygen content in
the exhaust stream. There is an
oxygen sensor mounted in each exhaust
manifold and one on each end of the catalytic converter.
the oxygen
sensor located
in the front exhaust
manifold is the Bank 2 Sensor 1
(Front) sensor. The
oxygen sensor located
in the rear exhaust manifold
is the Bank 1 Sensor 1 (Rear) sensor. The
oxygen sensor located
in the
Y-pipe ahead of the catalytic converter is the Bank 1 Sensor 2
(Pre-converter) sensor. The
oxygen sensor located
in the catalytic
converter outlet is the Bank 1 Sensor 3 (Post-converter) sensor.
OPERATION
An
oxygen sensor acts like a battery because it creates its own signal
voltage once it reaches operating temperature. This voltage is produced
when
the oxygen content
in the exhaust stream is different than the
oxygen content
in the atmosphere. A lean condition (high oxygen content
in exhaust) will produce a low voltage (near 0 volts) and a rich
condition (low oxygen
content in exhaust) will produce a high voltage
(near one volt). The
PCM provides a reference signal voltage (0.45
volt) and a ground to
the sensor. The
PCM reference voltage is
necessary because
the oxygen sensors do not provide their own voltage
until they reach operating temperature.
HEATING ELEMENT
the oxygen sensors also incorporate a heating element inside of the
sensor housing. This heating element is energized with the ignition On
and allows the sensors to reach operating temperatures quickly. The
PCM
can then use
oxygen sensor information sooner after engine start-up.
PCM INPUTS
The
PCM uses
oxygen sensor information during Closed Loop operation to
constantly adjust fuel control to reduce exhaust emissions. Because the
oxygen sensors provide information sooner after engine start-up,
exhaust emissions are reduced. Faulty oxygen sensors will cause various
driveability conditions and will set a
DTC.
That being said...I uploaded a .pdf for you of pictures showing the locations of ALL
the oxygen Sensors on your Vehicle. You can download it by clicking
HERE.
I hope this helps you. If you have any more questions or need any more diagrams, please don't
hesitate to ask...Thanks again,
JShreader!
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