Oxygen Sensors are Critical to passing Emissions Testing

In 1976, Bosch introduced one of the most important technologies for reducing emissions. Oxygen sensors have been standard equipment since 1980.

The oxygen sensor monitors the level of oxygen in the exhaust so an onboard computer can regulate the air/fuel mixture to reduce emissions. The oxygen sensor in located in the exhaust manifold down pipes before the catalytic converter.

As oxygen sensors age, they begin to fail and prevent the onboard computer from making the necessary corrections, allowing the mixture to run rich affecting your emission inspection, most inspection stations will be able to tell you if your emission failure is due to oxygen sensor. (Oxygen sensor failure usually prompts a sensor light or check engine light to come on)

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