I know it comes up as the maf and I checked all the intake pipes. While looking them over I found the crank case vent tube was hanging. The plastic nipple broke off the stock intake. I tried to rig something up to see if the code would stay cleared but it comes back right away. Does anyone know if that would throw code p0100?

 

Boost leaks will cause that code

 

I dont think theres a boost leak. The car builds perfect boost and I feel no lose of power. Is it possible for the crank case vent tube being broken off lead to that code? also 2008 t/c cobalt.

 

Dose anyone know if a bad diverter valve can cause this code too?