What Does the O2 Sensor Do on a Car?

December 4, 2023

Your car’s oxygen sensors are critical to keeping your engine running smoothly and efficiently. Located in your vehicle’s exhaust system, they help ensure that the ratio of air and fuel taken into each combustion cycle remains optimal for power, fuel economy, and emissions control.

When your oxygen sensor goes bad, it may trigger your Check Engine light to come on and can cause your engine to run rough or misfire. A faulty sensor can also lead to poor gas mileage, so it’s important to monitor your fuel usage and be ready to replace the sensor if necessary.

There are a few signs that your oxygen sensor may be going bad. One of the most obvious is a sudden drop in your fuel efficiency. If you notice that your fuel efficiency has been decreasing and the check engine light is on, it is a good idea to schedule an appointment with your local Meineke store.

Your mechanic will use a diagnostic tool to test your oxygen sensor, as well as any other related components, to determine the cause of the problem. Your car’s oxygen sensor is a very delicate piece of technology, so it is crucial to leave this type of work to the experts. While you might be tempted to do some DIY research, it is highly recommended that you avoid trying to clean your sensor yourself. This can damage the sensitive technology and result in costly repairs down the road.


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