What is mass air flow rate sensor in vehicle? All Questions › Category: Automotive Electronics › What is mass air flow rate sensor in vehicle? 0 Vote Up Vote Down chetan shidling asked 4 years ago I need short information. 1 Answers 0 Vote Up Vote Down chetan shidling answered 4 years ago For the correct operation of an electronically controlled engine requires a measurement of the mass flow rate of air into the engine. This requires a sensor that can sense the air flow rate into the intake manifold of the engine.