MAF Sensor Quiz

What does the mass airflow (MAF) sensor measure?

• The temperature of the engine

• The mass or weight of air being drawn into an engine

• The speed of the vehicle

• The pressure of the tires

What is sent to the ECU as an air mass value after electronic conditioning in a MAF sensor?

• Voltage change

• Temperature change

• Current flow change

• Pressure change

What is the purpose of heating the wire to 980 °C for 1 second in some systems?

• To measure air temperature

• To burn-off accumulated dust and contaminates

• To cool down the engine

• To increase fuel efficiency

What is the function of the second 'compensation' wire in the sensor?

• To measure air temperature

• To increase airflow

• To reduce noise

• To enhance fuel combustion

What does ECU stand for in the context of vehicle sensors?

• Engine Control Unit

• Electronic Circuit Unit

• Energy Conservation Unit

• Emission Control Unit

What is the primary function of the MAF sensor in a vehicle?

• To measure tire pressure

• To monitor air and fuel mixture

• To check oil levels

• To control the air conditioning

What is a potential environmental impact of a defective MAF sensor?

• Reduced emissions

• Higher than normal exhaust emissions

• Cleaner air

• Lower fuel consumption

What does a rich air/fuel ratio indicate?

• Too much air

• Too much fuel

• Perfect balance

• No fuel

What issue does the code P0103 represent?

• Circuit Intermittent

• Circuit Low Input

• Circuit High Output

• Circuit Range/Performance Problem

What might unmeasured 'false air' cause in an engine?

• Run lean

• Run rich

• Overheat

• Stall