You will find your Audi A6 oxygen sensor located near your exhaust manifold. The A6 oxygen sensor is part of a network of sensors your car uses to regulate its combustion cycle. The primary function of the Audi A6 oxygen sensor is to measure the level of oxygen that is mixing with your fuel.

Your engine strives for an oxygen-to-fuel ratio of 14.7 to 1, which is the goal your A6 oxygen sensor attempts to achieve. When the Audi A6 oxygen sensor is not functioning properly, your car's computer relies on data from other sensors to estimate the amount of oxygen.

This typically means the oxygen-fuel mixture will be "rich"—your engine will use more fuel than it needs, because too much fuel is better than too little. A faulty A6 oxygen sensor reduces your fuel economy. Too much fuel in your exhaust due to a bad Audi A6 oxygen sensor will also damage your catalytic converter over time. The most reliable way to detect a faulty A6 oxygen sensor is through a diagnostics check. However, an Audi A6 oxygen sensor that is not working correctly sometimes functions intermittently, so a diagnostics test will not always catch it. If you have noticed that a tank of gas is not getting you as far as it used to, you may need to replace your A6 oxygen sensor to restore your fuel economy. Browse our easy-to-search online catalogue for a replacement Audi A6 oxygen sensor at a discount price. Your new A6 oxygen sensor will be shipped right to your door when you order through our secure online server or call our toll-free customer service number.