Honda oxygen sensors are designed to do a very crucial task in the harshest of environments. It is the device that "reads" the quantity of the oxygen in the exhaust and informs the fuel injector of the amount of fuel needed by the engine to maintain the correct air/fuel ratio. The oxygen sensor in your Honda vehicle has to accurately monitor this red-hot exhaust hundreds of times per minute and convert its status into a corresponding voltage signal. The said voltage signal will then be sent to the computer in the vehicle that issues a command to adjust the fuel to obtain a correct ratio.
Just like the oxygen sensors for other vehicle makes, Honda oxygen sensor is usually positioned in the exhaust manifold downpipe before the catalytic converter of your Honda vehicle or in the middle of the two mentioned components. The speed with which your Honda oxygen sensor responds to the oxygen changes in the exhaust is really necessary to have correct fuel control as well as maximum fuel economy and low vehicle emissions.
Worn out or aged Honda oxygen sensor usually yields incorrect readings and it can lead to engine and catalytic converter problems. If you want to pass emissions test, make sure that your Honda oxygen sensor is in good working condition. Old or damaged oxygen sensor is the main cause of extreme harmful exhaust emissions as well as failed emissions tests. As they aged, Honda oxygen sensors can give inaccurate readings which can lead to waste of fuel and problems in engine performance. So the moment you discover that your Honda oxygen sensor is already defective or malfunctioning, have it replaced immediately.