When you seek the services of a professional, you will need to consider the labor fee. Some sensors cost about $100 while some are about $400. The cost of the mass airflow sensor also depends on the model of the car. One of the factors that determine the cost of replacing a mass airflow sensor is the make and model of the vehicle. If your mass airflow sensor is damaged then, you will have to repair or replace it. It might be a little bit higher depending on the charges of the mechanic and the model of your vehicle. The labor cost should be around $20 to $50 depending on the mechanic you are going to. Some sensors might be about $400 while others can cost about $100 to $200. This includes the labor cost and that of the parts you need to purchase.ĭeterminants of these prices are mainly the make and model of your car. If you need to replace the MAF sensor, you can save about $120 to $200. The cost of replacing the mass airflow sensor depends on the model of your car, your location, and the labor cost of the mechanic you are using. If the volt does not read between those two figures, there is a fault in the circuit. The readings should be about 10 to 13 volts. You can now connect the meters red probe to the positive battery terminal and the black to the ground on the terminal of the connector. If it does not, there may be wrong between the car computer and electrical connector. The meter should be reading about 10 to 13 volts now. Put the ignition to the ON position without starting the car engine. After doing this, connect the meters black probe to the ground and its red probe to the connector power terminal. Now, set your meter to 20 volts direct current. You can also check wires to know if they are tight enough because a loose or burnt wire will affect the signals of the sensor. Now, you need to inspect it visually, Check the MAF sensor, connectors, and throttle for any corrosion or disconnected wiring.Ĭheck the electrical connector for any damages or obstruction. However, it is expected to be mounted around the air duct area. It is inside the filter house in some car models. Open the car hood and you can find it just between the throttle body and air filter. To begin testing, the first thing to do is to locate it in the car. This ensures that the meter does not damage sensitive devices while drawing lots of currents. If you want to test your sensor with a multimeter, you should get one with a minimum of 10 Megaohm. The mass airflow sensor is an important component of a vehicle. How to Test Mass Airflow sensor with a Multimeter