'll Disassemble the air flow sensor (English Mass Air Flow Sensor), also known as flow of air from the diesel engine CRDI D3EA 1.5. Part: 28164-27500, an analogue of Bosch: 0281002528. You can order, for example, here.
So it looks like:
Otkovyryali top cover, it sits on the sealant.
Inside we see the processing scheme, potted himself MEMS sensor placed in the channel for air (MEMS-microelectromechanical systems it).
More close-up, click on the photo to enlarge.
Once again it is best not to disassemble, so how to fix such a device in the home is unreal, and ruin-easily.