Practice question

Which engine sensor measures the volume and density of air entering the intake manifold to help the ECU calculate the correct fuel injection amount?

  1. Mass Air Flow (MAF) Sensor
  2. Oxygen (O2) Sensor
  3. Throttle Position Sensor (TPS)
  4. Engine Coolant Temperature (ECT) Sensor

Answer: A — Mass Air Flow (MAF) Sensor

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