There are lot of possible reasons for a Air Mass Sensor to fail.

The Air Mass Sensor, also known as Mass Airflow Sensor, Air Mass Meter, Mass Airflow Meter, MAF or AFM essentially measures the amount of air that passes through to the engine to create an air / fuel ratio that allows your car to reach its full potential and efficiency. The sensor on MAF device is very sensitive and can be easily contaminated by dirt, debris and oil. This fault may not then show up on your diagnostic system as your cars computer may think the device is still working within its limit which it considers to be ok. This then means that there may be a lack of power, high fuel consumption, poor starting and stalling.

Common OBD-II (On Board Diagnostics) Trouble Codes related to a Air Mass Sensor

The On Board Diagnostics (OBD or EOBD) is a program that can capture problems within the vehicle system and issues the vehicle is possibly experiencing. The problem your vehicle may have already has a code associated to it and different engine parts in your vehicle would have codes only associated to them.  Fault codes below highlight specific codes you may come across when diagnosing a Air Mass Sensor.

To find out the fault codes / or problems you may be facing you can visit your local garage/ diagnostic centre for guidance or you can try to find out yourself by locating the OBD/EOBD connector which will be located at various locations of your vehicle depending on your vehicle manufacturer and using the vehicle manufactures recommended diagnostic equipment.

P0100

This means that there is a problem between the ECM detector and the MAF sensor.
Symptoms:
There will the noticeable lack of power and the vehicle will feel sluggish, the engine will run poorly and there will be a poor fuel mileage.
Causes:
That there may be one or more wires may have been disconnected / damage or the sensor itself is faulty.

P0101

This means that there is a problem with the MAF meters circuit. The sensors frequency is not within a permitted range.
Symptoms:
The vehicle may stall; run rough, a larger increase in fuel consumption and excessive smoke.
Causes:
You may have a faulty MAF meter, there could be an intake air leak, dirt on the airflow sensor or air filter, the MAF sensor harness is either opened or shortened.

P0102

This means that there is a problem with the MAF meters circuit in which it has a lower expected voltage.
Symptoms:
There will the lack of power and there may be an increase into the fuel consumption.
Causes:
You may have a faulty MAF meter, the MAF may be contaminated or dirty, there may be a wire that’s damage or disconnected.

P0103

This means that there is a problem with the MAF meters circuit.
Symptoms:
There may be an increase into the fuel consumption or even no abnormal symptoms could be found.
Causes:
You may have a faulty MAF meter, there could be an intake air leak, dirt on the airflow sensor or air filter, the MAF sensor harness is either opened or shortened.

P0104

This means that there is a problem with the MAF meters circuit. The MAF meter is providing the wrong readings.
Symptoms:
There will the lack of power, the vehicle will feel sluggish and there may be an increase the fuel consumption.
Causes:
The Mass Air Flow Circuit is incomplete / broken / frayed wire etc. There could also be an internal air leak.

Having Problems with you Air Mass Sensor ?

Do not worry UK Diesel Parts Stock a wide range of replacement Air Mass Sensors. We stock OEM and aftermarket version of most of our range. This means we have a Air Mass Sensor for everyone’s budget and requirements !

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