How to read OBDII for MAS?
 

I hooked up a generic OBDII scanner on my car with the check engine light on and a code of p0170. I tried to get a live reading of the MAS. What am I looking for?

I get this reading of 0.60-0.63 at idle and as I add gas , the reading climbs...more I rev the more it climbs.

Is this the right reading to diagnose for a faulty MAS?

I searched toe forums and have seent hat a 1.25 readind for a MAS is bad. What exaclty is that reading compared to mine?

Can anyone please help?

I think you are reading the return VOLTAGE from the MAF sensor, at idle & that should be around 1V.
The correction factor(partial load) at 1.25 is the figure that will turn the check engine lamp on.

Ok..no idea how to use this thing...what exactly am i looking for?