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P420 code

Discussion in '1st Gen. Tacomas (1995-2004)' started by VintageFast, Oct 31, 2015.

  1. Oct 31, 2015 at 2:31 PM
    #1
    VintageFast

    #1
    VintageFast [OP] Well-Known Member

    Joined:
    May 17, 2012
    Member:
    #79017
    Messages:
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    First Name:
    Jim
    DFW, Texas
    Vehicle:
    02 Prerunner 3.4
    Just threw a 420 code (keep it down stoners). Anyone have an idea where I should start? It's supposed to be an exhaust leak before the o2 on bank 1 but I can't find anything wrong.
     
    VintageFast, Oct 31, 2015
    #1
  2. Oct 31, 2015 at 2:37 PM
    #2
    DukesTaco

    #2
    DukesTaco Well-Known Member

    Joined:
    Feb 19, 2015
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    AZ
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    2nd Gen Double cab Pre Runner
    Run a bottle of seafoam through it it will clean your engine and you'll see where your exhaust leaks are
     
    DukesTaco, Oct 31, 2015
    #2
  3. Oct 31, 2015 at 6:18 PM
    #3
    Caligula

    #3
    Caligula Well-Known Member

    Joined:
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    Los Angeles, CA
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    2000 Ext. Cab Prerunner 2.7L
    Caligula, Oct 31, 2015
    #3
  4. Oct 31, 2015 at 6:22 PM
    #4
    TashcomerTexas

    #4
    TashcomerTexas My truck is a whiner

    Joined:
    Apr 16, 2014
    Member:
    #127853
    Messages:
    10,350
    Vehicle:
    2003 TRD DC Supracharged
    Your only solution is to hot box it, this will ensure the cab is sealed properly :rasta:
     
    TashcomerTexas, Oct 31, 2015
    #4
    Hairy Taco likes this.

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