30,000 to 50,000 miles is typical. However, constantly exposed to the harsh
environment found in an automobile's exhaust system, the oxygen sensor must
sustain a constant barrage of harmful exhaust gases, extreme heat and high
velocity particles and that is under normal operating conditions.
Sometimes contaminants such as coolant, oil, or silicone particles will find
their way to the sensor as well. This contaminates the sensor and renders it
inoperable. An oxygen sensor's life is long in some applications and up to
100,000 mile but whether by contamination or normal use, its effectiveness will
inevitably decrease over time.
We recognize the need to keep vehicles running clean. A bad oxygen sensor can
cause unacceptable emissions levels, affect performance and ultimately damage
the catalytic converter. Make it a point to check oxygen sensors at each tune-up
and replace faulty sensors with a new oxygen sensor.
