Mass air flow sensor test
Le Mans Master
Joined: Sep 2006
Posts: 6,050
Likes: 147
From: Phoenix AZ
2021 C4 of the Year - Modified Finalist
Yea, unplug it, and see if you get a check engine light.
These are electronic units. You need a electronic controller such as an engine computer opened up with test points to verify operation with an oscilloscope
These are electronic units. You need a electronic controller such as an engine computer opened up with test points to verify operation with an oscilloscope
