O2 sensor where is it located

One key reason the light goes on is due to an oxygen sensor malfunction. Learn more about this device to understand how important it is and when to get repairs.

The oxygen sensor is part of the emissions system in your vehicle. It measures the proportion of oxygen in your engine. The internal combustion in the vehicle works by burning gasoline. To properly burn gasoline, most cars need a ratio of 14 grams of oxygen for every gram of gas. The oxygen sensor helps keep that balance in check. The sensor is typically located on the passenger side of the car, mounted directly onto the exhaust pipe near the catalytic converter.

When the sensor goes bad, your car may lose up to 40 percent of its fuel efficiency, because your car will use too much gas. When a car has too much air, the engine is said to be running lean. A lean engine causes jerking or a hesitation in acceleration. A rich engine mixture causes the vehicle to run hot and creates pollution. We have tons of articles to read, all lovingly crafted by CarAdvise for you! Log In. Sign Up. How does it Work? CarAdvise May 23, What is an O2 Sensor? Typical O2 sensor installation on a modern car If the oxygen level is high in the exhaust pipe after combustion, then it means the car is running on a rich mixture.

More To Explore. July 21, No Comments. May 11, No Comments. Most late model engines have multiple oxygen sensors, so which one is sensor 1, 2 or 3, and how do you know which cylinder bank is 1 or 2? On straight four and six cylinder engines, there is only one bank of cylinders. So all of the oxygen sensors will be bank 1. The O2 sensor located in or behind the catalytic converter will be Sensor 2. View More. Thank You Thanks for subscribing. Check your in-box to get started.

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