The upstream oxygen sensor is more likely to cause a noticeable When either of these sensors malfunctions, it can lead to several symptoms and potential problems for your vehicle. There are two main types of oxygen sensors: downstream and upstream. They help your engine’s computer adjust the air-to-fuel mixture for optimal efficiency.
Oxygen sensors play a vital role in your Trax’s performance and emissions control. Replacing a bad catalytic converter can be expensive, so it’s essential to address any potential oxygen sensor issues early on. This can cause it to overheat, release a rotten egg smell, and eventually fail. If the oxygen sensor is unable to provide accurate information about the air-fuel mixture, it can lead to more unburned fuel entering the catalytic converter. Catalytic Converter IssuesĪ failing oxygen sensor can also contribute to catalytic converter problems in your Chevy Trax. If you notice a significant drop in your vehicle’s fuel efficiency, it’s worth having your oxygen sensor checked. Since the oxygen sensor plays a key role in maintaining the efficiency of the combustion process, a bad sensor can result in poor fuel economy. When your Chevy Trax’s oxygen sensor(s) are not working correctly, it can disrupt the optimal 14.7:1 air-fuel mixture, which can negatively impact your gas mileage. When the sensor isn’t working properly, your car’s exhaust fumes may appear black or have a strong smell of gasoline, due to the engine running too rich, leading to increased pollutant emissions. Emission Problems (Failed Inspection)Ī faulty oxygen sensor can also lead to emission problems in your Trax. Issues like rough idling, misfiring, and engine hesitation can occur, causing your Trax to feel underpowered. When your Chevy Trax has an oxygen sensor that is bad or failing, you may notice that your vehicle’ss engine performance suffers. We cover codes and what to do further down the page.
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You can utilize a code scanner to retrieve the codes that are stored they’ll tell you which O2 sensor is to blame and what the issue is with it. The check engine light will almost always come on when one of your Trax’s oxygen sensors has gone bad. Signs of a Bad Oxygen Sensor in the Chevy Trax Check Engine Light When the oxygen sensor detects that there is too much oxygen in the exhaust gases, it signals your Chevy Trax’s PCM that the engine is running lean, meaning that more fuel should be added to the mixture.Ĭonversely, if the sensor detects that there is not enough oxygen in the exhaust gases, it indicates that the engine is running rich, and the ECM should reduce the amount of fuel being delivered.īy continuously monitoring the oxygen levels in your exhaust gases, the sensor ensures that the air-fuel mixture is maintained within a narrow range to optimize engine performance, reduce harmful emissions, and maintain good fuel economy. Function of an Oxygen Sensor Typical Oxygen Sensor Oxygen sensors (measure gasses as they exit the engine), along with MAF or MAP sensors (measure gasses as they enter the engine), are the most critical sensors that your vehicle’s PCM (powertrain control module) uses for engine performance. It plays a vital role in monitoring the levels of oxygen present in the exhaust gases produced during the combustion process. What is an Oxygen Sensor, and What Does it Do?Īn oxygen sensor, commonly referred to as an O2 sensor, is a crucial component in your Trax’s exhaust system. Signs of a Bad Oxygen Sensor in the Chevy Trax.What is an Oxygen Sensor, and What Does it Do?.
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