Notifications You must be signed in to change notification settings The oxygen (O2) sensor in your car's engine system is a vital component responsible for measuring the oxygen level in exhaust gases.

Understanding how oxygen sensors work will help you diagnose problems without having to rely completely on a repair shop. Oxygen sensors act as low-voltage producers, such as how a microphone uses ...

Problems with catalytic converters are one of the most common causes of check engine lights, but they’re extremely expensive ...