Symptoms of Failing Oxygen Sensor in Your Car

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Symptoms of Failing Oxygen Sensor in Your Car
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The oxygen sensor in your car is used to measure
the oxygen levels in the exhaust gas exiting the
engine.
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This information is used by the Powertrain
control module to find out the correct air to
fuel ratio for your engine in real time.
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The sensor is located in the exhaust system and
allows the fuel injection and engine timing to
work efficiently, which assists with emissions
control.
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The oxygen sensor transmits the data to the
vehicle's process control module to maintain the
optimal air to fuel ratio for your engine.
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A bad or malfunctioning oxygen sensor will have a
negative impact on the environmental emissions
and engine performance.
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Here are the symptoms of a failing oxygen sensor
in your car.

• Check engine light illuminates
• Bad fuel economy
• Rough engine idle misfire

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Check engine light illuminates
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The first sign of failing oxygen sensor is check
engine light. The check engine light will
illuminate if you have a bad or failing oxygen
sensor.
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As soon as the check engine light gets turned on,
you must contact a professional automotive
technician to diagnose the issue.
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This light can get illuminated for many
different reasons, so it is important to have it
looked at by a professional who can find out the
exact cause.
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Bad fuel economy
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If the oxygen sensor is failing, the
fuel-delivery and fuel-combustion systems will be
thrown off.
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If a failing oxygen sensor disrupts the air to
fuel ratio mixture, or too much fuel is injected
into the engine, your car's mileage will be
reduced.
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If you find that you are filling up your gas tank
more often, keep a record of how many gallons you
fill up with how often.
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If you find out it is more than normal, then your
oxygen sensor has definitely gone bad and have a
professional mechanic check out your oxygen
sensor.
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Rough engine idle misfire
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As your oxygen sensor is going bad you may notice
your vehicle is running rough, misfiring or
running irregularly while idling.
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Since the oxygen sensor output, helps control
engine timing, combustion intervals, and the air
to fuel ratio, a bad sensor can affect these
engine functions, which leads to rough or
irregular engine idle.
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Conclusion
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If your car was manufactured within the past 15
years, the oxygen sensor should be replaced every
60,000 to 90,000 miles.
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Replacing a bad or failing oxygen sensor will
reduce the level of emissions your car puts into
the atmosphere while keeping your engine running
smoothly and properly.
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As soon as you notice the above symptoms, then
immediately contact the automotive workshop to
replace the oxygen sensor.
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