Technician A says Mass Airflow (MAF) sensors are better sensors than Manifold Absolute Pressure (MAP) sensors for measuring load. Technician B says MAF sensors measure the actual mass of the air coming into the engine, so the Powertrain Control Module (PCM) can accurately calculate the proper amount of fuel. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because MAF sensors provide a direct measurement of the air entering the engine, which can be more accurate for load measurement. Technician B is correct because MAF sensors measure the actual mass of air, allowing the PCM to calculate the correct fuel amount.

Technician a Says Mass Airflow (MAF) Sensors Are Better Sensors