The Mass Air Flow sensor is typically found in the air intake system, near the air filter box.


The main bulk of the unit is hidden inside the air intake ducting.



Many problems are caused by dirt and contamination, so there's no need to buy a new sensor. Just give it a clean.


It is worth remembering that they are very robust units, and rarely break under normal driving conditions.




The Bosch MAF sensor in this picture, has been removed from its housing.


Pierburg, Siemens, Hitachi and Denso units may differ in appearance, but they all measure air flow in a similar way.

Cleaning the MAF sensor is very easy to do and takes less than half an hour. It usually only requires a screwdriver, or socket, with the correct head and some cleaning spray.


Navigate to 'How To Clean' at the top of this page to see just how easy it is, then go to 'Where To Buy' to browse suitable products.