The Ultimate Oxygen Sensor Buyer’s Guide for Nissan Owners

Are you a Nissan owner who’s looking to replace an oxygen sensor? This buyer’s guide is just what you need. Here, you will find instructions on diagnosing a failing oxygen sensor, a tutorial on replacing your oxygen sensor, and more.

Oxygen sensor location

What's An Oxygen Sensor, and Why Is It Important?

An oxygen sensor is a tube-shaped sensor that measures the oxygen content in your Nissan’s exhaust system up to seven times per second. It then uses the information to help the ECU adjust the engine's air/fuel ratio to keep it running at its best. Nissan installed between one and four oxygen sensors into your car’s exhaust system. They help your vehicle have optimal fuel economy and pass emissions testing. This article has additional information on oxygen sensors if you’re interested in reading more about them.

How to Diagnose a Failing Oxygen Sensor

Because exhaust gases are hot and dirty, oxygen sensors can wear out. The more your vehicle ages, the more likely it is that one of your oxygen sensors will go bad. A faulty sensor affects your fuel economy and causes other engine problems, so it’s important to diagnose the issue as soon as possible. All you need is a digital voltmeter and this comprehensive guide.

Are OEM Oxygen Sensors Better Than Aftermarket?

Wondering if you should pass on an OEM replacement oxygen sensor in favor of a cheaper aftermarket one? It’s actually not a good idea, and this post tells you why. In a nutshell, OEM oxygen sensors are a much safer bet than aftermarket sensors. They last longer, come with comprehensive warranty coverage, and are made specifically for your exact Nissan.

How to Replace Your Nissan's Oxygen Sensor

The proper way to replace a bad oxygen sensor is outlined in this tutorial. You'll also find a list of the tools required, and a helpful list of OEM replacement sensor part numbers for various Nissan models.

The replacement process basically consists of five steps that show you how to remove the old sensor and install the new one. We hope this guide has helped you to better understand oxygen sensors and how to replace one safely and efficiently. Please contact us with any questions.