been having P0100 code for the MAF. but everytime i checked for voltage and other things with the MAF it always came back good. well i got the infamous passenger side manifold oil leak. fixed that, reset the computer, but the code still stayed for 2 more days. well i reset the comp after 2 days and now it has been over 2 weeks and the code has not came back!
any possible way that the intake manifold gasket was causing my P0100 code? my car does idle better now, and under WOT i havent notice it missing at all. it used to stumble over at idle and sound like it was about to die out.

any thoughts on this??
TIA

 

Well, you're OBD2 - your PCM knew air metering wasn't right because it was sucking in false air and suspected the MAF.

 

The diagnostic for P0100 is for the PCM to look at consecutive readings of the MAF sensor, and look for at least a small difference in readings. If it sees the same value for 4 reads in a row, it sets the code. Basically, P0100 indicates a static reading condition, not a "rationallity" check.

P0101 is the code for the rationality check, where the PCM compares the MAF AFG/S to a speed-density calculation, and sets the code if the S-D calculation is 25% (high flow conditons) to 40% (low flow conditons) different than the MAF reading.

 

that was too technical for me. but i think i get what you are saying injuneer. so it mostly likely was not the problem?
before i did the intake manifold gasket i would try different things to fis the MAF code and reset the code and it would always come back within 3 days or soemtimes within an hour or minutes of driving. but now it has been off for over 2 weeks. so it makes me think that something i did ( if it wasnt the gasket) fixed the problem?
thanks for the replies, i just hope that code dont come back