Posts Tagged: how an oxygen sensor works

How an Oxygen sensor works

March 21, 2021

Learn how an oxygen sensor works An oxygen sensor measures how much oxygen is left in the exhaust after combustion. The vehicle’s Engine Control Module (ECM) uses that data to recalculate how much fuel to add to each cylinder. There are two types of sensors, narrow band and wide band; also = known as an O2 sensor or an air fuel ratio sensor. I’ll explain how an oxygen sensor works and compare it to how an air fuel ratio sensor works. Oxygen levels in the exhaust are always changing If … Read More