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<h2>What does a Nitrogen Oxide sensor do?</h2>
A car nitrogen oxide (NOx) sensor is a component that keeps an eye on the levels of nitrogen oxide gases in a vehicle's exhaust system. It measures how much NOx is present in the exhaust gases and sends this information to the engine control unit. This helps the engine control unit make necessary adjustments to things like the air-fuel mixture and ignition timing to ensure the engine is running efficiently and emitting fewer harmful emissions. In a nutshell, the NOx sensor plays a crucial role in ensuring the vehicle meets emission standards and contributes to a cleaner environment.
<h2>Are NOx sensors providing accurate readings in all weather and driving conditions?</h2>
NOx sensors may have limitations in their functionality and accuracy under certain weather and driving conditions. Factors such as extreme temperatures, high humidity, and certain exhaust gas compositions can potentially impact the performance and accuracy of NOx sensors. For example, at very low or high temperatures, the sensitivity and response time of NOx sensors can be affected, potentially leading to less accurate readings. Furthermore, the presence of other contaminants or substances in the exhaust stream, such as sulfur compounds or particulate matter, can potentially interfere with the sensor's operation, affecting its accuracy.
<h2>How to tell if my Nitrogen Oxide NOx sensor is bad?</h2>
If you suspect that your NOx (nitrogen oxide) sensor may be faulty or not functioning properly, there are a few signs that can indicate a potential issue:
<ul>
<li>Check engine light: Illumination of the check engine light on the dashboard may indicate a faulty NOx sensor or another emission-related issue.</li>
<li>Reduced engine performance: A malfunctioning NOx sensor can lead to decreased engine performance, including power loss, sluggish acceleration, or poor fuel efficiency.</li>
<li>Failed emissions test: If your vehicle consistently fails emissions tests or exhibits a significant increase in NOx emissions, it could be due to a faulty NOx sensor.</li>
<li>Poor fuel economy: A malfunctioning NOx sensor may result in poor fuel economy without any other apparent issues.</li>
</ul>

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Nitrogen Oxide Sensor for 2014-2017 BMW 328d xDrive

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2017 BMW 328d%20xDrive Nitrogen Oxide Sensor