Posts Tagged: air fuel ratio sensor

Oxygen sensor versus air fuel ratio sensor

Air fuel ratio sensor What are the biggest difference between an Oxygen sensor and an air fuel ratio sensor? 1. Both measure oxygen in the exhaust stream, but a wide range air fuel ratio sensor (AFR) measures the actual amount of oxygen, as opposed to an ordinary oxygen sensor that just reports a rich or lean condition in the exhaust. 2. An AFR sensor can measure mixtures from extremely rich to extremely lean. They can even measure the oxygen content of air. This allows the ECM much more control over … Read More