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P0401 code

Discussion in 'Technical Chat' started by MJMorlan17, Jan 13, 2014.

  1. Jan 13, 2014 at 5:56 AM
    #1
    MJMorlan17

    #1
    MJMorlan17 [OP] Member

    Joined:
    Jan 12, 2014
    Member:
    #120493
    Messages:
    11
    Gender:
    Male
    First Name:
    Matthew
    Las Vegas,Nv
    Vehicle:
    96 Tacoma 2WD
    Just rebuilt my 1996 2.4l and P0401 comes up.I pulled cleaned and tested EGR valve,its good.Check all vacuum hoses and connections,good.Pulled the top half of intake,removed egr and that port was almost completely clogged with carbon,6 cans of cleaner and alot of work,no longer clogged.Anyone have any advice to the culprit?The only thing left is the vacuum modulator or the vacuum control valve,or am I missing something?Help!
     
    MJMorlan17, Jan 13, 2014
    #1
  2. Jan 18, 2014 at 10:03 AM
    #2
    blakes09

    #2
    blakes09 Toyota Tech..when im not Fishing

    Joined:
    Apr 18, 2012
    Member:
    #77164
    Messages:
    818
    Gender:
    Male
    First Name:
    Blake
    Deep South
    Vehicle:
    4x4
    blakes09, Jan 18, 2014
    #2
  3. Jan 18, 2014 at 2:28 PM
    #3
    tan4x4

    #3
    tan4x4 Well-Known Member

    Joined:
    Nov 30, 2011
    Member:
    #67982
    Messages:
    3,809
    Gender:
    Male
    First Name:
    Rick
    Folsom, CA
    Vehicle:
    99 Tacoma EC 4x4 2.7L Auto
    Bilsteins, OME 881's, 3-leaf AAL, Detroit TruTrac, Tundra brake swap, Michelin LTX AT2, Tranny skidplate, TC skidplate, CBI rear bumper, TG sliders, UltraGauge, PowerTank, Reverse Camera
    I had a similar problem, and it turned out to be the EGR temp sensor. I removed it, cleaned it, replaced it. Problem gone.
     
    tan4x4, Jan 18, 2014
    #3

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