Free Automotive Repair Advice by Certified ASE Technicians
How Does it Work /
Oxygen Sensor
Oxygen Sensor
The oxygen sensor in your vehicle is a electronic component that is designed
to measure levels of oxygen in the
engine exhaust. Typically, the oxygen sensor is mounted to the
exhaust system tube, with the sensor part inside the tube. This measures the
oxygen mixture by generating a small amount of electricity do to the difference
in atmosphere, oxygen and carbon dioxide. The
ECM monitors this voltage and adjusts the fuel system and engine timing accordingly.
Oxygen Sensor
The
engine control unit adjusts fuel intake necessary for correct combustion. The
oxygen sensor is in continuous communication with the electronic engine control
unit. When the engine is cold the oxygen sensor is not as active. To correct this
condition the oxygen sensor has been constructed with a 12 volt heater element.
This heater allows the sensor to read at maximum efficiency quicker. When the throttle
is wide open and under max load the
oxygen sensor will go full voltage until normal operating conditions return.
Typically changing an
oxygen sensor when necessary is a simple process. Most solutions to oxygen sensor
problems result in changing the oxygen sensor. Due to the severe usage the sensor
endures, it is common for most sensors to last approximately 60,000 miles, however
it is not uncommon for an oxygen sensor to last only 30,000 miles depending on your
driving habits and vehicle conditions.
Oxygen Sensor Cut Away
Over the life of the oxygen sensor soot build up can occur on the sensing probe
which will can result in inaccurate readings. This can cause your engine to run
rough and consume excessive fuel. Remove the sensor and replace it with a new sensor.
How Does it Work
/ Oxygen Sensor
Check Manufacturer Specific Oxygen
Sensor Questions and Answers
Related Subjects
GET AN ONLINE
REPAIR MANUAL
FOR YOUR CAR Get instant access to your vehicles drive belt routing, wiring diagrams,
trouble code information, updates and factory bulletins.
| 
