plagued by P0102. why?

[DanaliHD]

for some reason, i keep getting a P0102 code. no idea why. when looking at my logs, i see the maf goes to 60.xx as soon as i get into boost. it's never done this before. i have logs of the maf at 45ish at wot, full boost. as soon as it hits 60+, the code sets and the truck falls hard on it's face. i've been runnin SD for a few weeks now because of it and i want the maf back on.

I tried swapping maf with a buddy, didn't work. I checked all fuses, checked all wiring. someone mentioned maybe a vacuum leak? NO IDEA.

someone please help. thanks guys

[DanaliHD]

if anyone has any suggestions, input, advise, anything, i'll take it. help!!!

[EC_Tune]

Are you getting gany codes other than P0102 when it shuts off? Have you modified the P0102 settings? post your log & cal here & we will sort it out as a community.

EC

[DanaliHD]

i'd love to post up my log and tune file here but don't know how to.

[jimmyblue]

Let's take a step back and go "old school" on this. Have
you hooked up a DMM to the MAF power, ground and
output terminals (relative to a known good PCM ground)?
Looking for +12V on the hot lead, near ground (not quite)
on the output as it'll be low frequency on the narrow
positive output pulses and a clean ground. Now, if you
went and coughed up the $39 or so for a DMM that reads
frequency, you could actually read the MAF output live.
The scanner should of course report the frequency as seen
by the PCM, but that is a step or two removed from the
fundamental hardware electrical health.

MAF power missing of course would hose you. MAF elements
badly fouled could lower the required heater power (frequency)
enough to run you up against the low frequency (1300Hz)
fault threshold. However I have several truck MAFs I've
measured on the bench and none of them are below 2KHz
in still air, so this would have to be a hell of a lot of fouling.
I'm inclined to suspect a lost power, bad connector etc. type
of problem.