What is a mass airflow sensor?
The mass airflow (MAF) sensor monitors the amount of air passing into the engine and sends the information to the powertrain control module (PCM). The vehicle’s computer uses the information, along with information from the manifold temperature and manifold absolute pressure (MAP)
sensors, to run the vehicle’s engine efficiently with an adequate fuel mixture with the right air-to-fuel ratio in the combustion chamber. The MAF sensor is typically located between the air filter and the intake manifold of the engine.
When should I replace the mass airflow sensor on my car?
You should replace your mass airflow sensor if you notice the following warning signs:
Illuminated check engine light
Pause before acceleration
Trouble starting the vehicle
Black smoke from the exhaust pipe
Excessive fuel consumption
Also, keep an eye out for OBD-II trouble codes P0171, P0174, or P0102
, which all point to possible issues with the MAF sensor. How often should a mass airflow sensor be replaced?
Mass airflow sensors do not have prescribed replacement intervals since they are meant to last the lifetime of your vehicle.
Routinely monitor your MAF sensor for signs of deterioration and take your vehicle to a mechanic if you believe a replacement is necessary.
Can I replace my mass airflow sensor myself?
An MAF sensor replacement should be handled by a certified mechanic with repair knowledge and expertise.
Avoid changing your own mass airflow sensor if you have limited experience with DIY car repair.