MAF Sensor Problems

Discussion in 'GM Powertrain' started by wesleytravis, Nov 28, 2008.

  1. wesleytravis

    wesleytravis New Member

    my 03 sierra threw the code P0102 so i cleared it with my programmer and just changed the MAF. after i started the truck the second time with the new, stock MAF, the code came back. i cleared it again but would still like to know why so i could fix it correctly. please help
  2. retired

    retired Rockstar 100 Posts

    Most likely you have air getting into the engine just pass the MAF sensor.
  3. dogger

    dogger New Member

    could be air getting in past the maf but not likely you'd have more codes then that. the second maf could be bad but I'm curious were your maf operating fail code is set? it should be set at 13500mhz if that is changed for some reason it it'll set off that code. if your handheld can't tell you that find somebody with hp tuners or ls edit they could look at it for you.
  4. raisor87

    raisor87 Rockstar 100 Posts

    try to manually reset your computer by disconnecting the battery for a few minutes and make sure your elect connections are clean

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