The mass air flow (MAF) sensor measures the mass flow rate of air entering the engine, and this information is used by the engine control module (ECM) to calculate the amount of fuel needed for the correct air-fuel mixture. Mass air flow sensors are often built into a larger housing that may include a screen to prevent debris to prevent the
Sep 13, 2021 · The air fuel ratio (A/F) sensor measures oxygen content of the exhaust in a wider range. It is also known as the "broadband lambda sensor" or "lambda probe." The air fuel ratio sensor is installed in the exhaust manifold or in the front exhaust pipe, before the catalytic converter. It might also be called 'front O2 sensor'. .