Mass Air Floor Sensor

Code p0101 means that the signal from the.

Mass air floor sensor.

It s a fairly simple job. The pcm uses this input to calculate engine load. A mass airflow sensor mas determines the mass of air entering a vehicle s fuel injection engine and passes that data to the engine control unit or ecu. Symptoms of a bad mass air flow sensor include decreased fuel economy starting trouble stalling shortly after starting rough idling and jerking during acceleration.

The mass air flow sensor must be cleaned and the air filter must be reinstalled correctly or replaced. However seeing as it functions all the time when you run your car it is understandable that the sensor often fails sooner rather than later. There are several designs of maf sensors but the most common by far is the hot wire maf sensor. The part costs from 89 to 380.

Common pollutants like dirt and dust are the major reason behind a failing air flow sensor. Mass airflow sensors maf have the responsibility of reporting the amount of air entering the engine to the powertrain control module pcm. The mass air flow maf sensor part of your vehicle s electronic fuel injection system is responsible for calculating the total amount of air entering the engine. A mass air flow sensor maf is a sensor used to determine the mass flow rate of air entering a fuel injected internal combustion engine.

You ll notice if the tailpipes eject black smoke or when the engine runs rough or backfires. The air mass information is necessary for the ecu to correctly balance and deliver the correct amount of fuel to the engine. Mass air flow sensor meter maf 22680 7s000 af10141 compatible for nissan altima infiniti g37 suzuki 07 13 sentra 05 15 xterra 03 09 350z 3 5l 09 15 370z 3 7l 03 15 murano 3 5l 05 08 g35 3 5l. The mass air flow sensor is prone to failure due to age or other factors affecting its performance.

A bad mass air flow sensor won t reliably measure the amount of air coming in through the air filter resulting in a delay in the fuel delivery during sudden acceleration and a temporary lack of power. Air changes its density with temperature and pressure. If your check engine light is on and your car has any of these symptoms you can check the maf sensor with an obd ii code reader. When a vehicle s mass airflow sensor is faulty or defective it can cause a variety of problems and usually results.

A faulty maf sensor can cause your vehicle to run too rich or run too lean. In automotive applications air density varies with the ambient. The air mass information is necessary for the engine control unit ecu to balance and deliver the correct fuel mass to the engine. If a sensor is dirty your mechanic may suggest cleaning it cleaning the airflow sensor is a.

This information is then used by the ecu to calculate the amount of fuel needed for the correct air fuel mixture. In such a scenario the ecu will sense the drop in engine vacuum first and then using other sensors will decide if more fuel is required. If the mass air flow sensor has failed or needs to be cleaned this can cause especially rich or lean fuel mixtures.