An oxygen sensor does two things. First it's designed to measure the amount of oxygen left in the exhaust gases, and sends that information to the engine's computer, so it can properly adjust the air/fuel ratio in order to run the engine at peak performance for it's driving condition. One vehicles with two oxygen sensors, they also help tell the engine's computer if the catalytic converter in functioning properly by relaying the oxygen left in the exhaust gas, before and after the catalytic converter. A bad catalytic converter will be read by the oxygen sensors the same, which tells the engine's computer something is wrong.
The oxygen sensor is crucial for emission testing and is a sometimes a reason for a failure. When shopping for an oxygen sensor, it is vital you look for a Genuine OEM Oxygen Sensor as this sensor and this sensor alone was designed to read oxygen specifically according to the engine's computer.
At Honda Parts Unlimited we only sell Genuine OEM Honda & Acura replacement parts. These parts are designed, engineered, and manufactured to work with your vehicle correctly, and are backed by Honda's Limited Parts Warranty, meaning they are also covered in case something should happen to them.
Below are our most popular Oxygen Sensors. If you can't find the one for your vehicle, please contact us, and let us find the right one for you!
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