Repairing LMM by drilling a hole?

'My uncle has a Peugeot dealership, and he mentioned that the mass airflow sensors (MAF sensors) in Peugeot direct injection engines often fail during the winter due to moisture. He said that in his workshop, it sometimes helped to drill a small hole. I need to ask him where to drill it.' Has anyone ever heard of that before?

hm....

The only thing I can imagine there would be a small drain hole in the air filter housing.

but that is actually standard in decent vehicles .


CU Gremlin.