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P0420 Code

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Blackbeast06taco, Jan 14, 2020.

  1. Jan 14, 2020 at 10:46 AM
    #1
    Blackbeast06taco

    #1
    Blackbeast06taco [OP] Member

    Joined:
    Jul 28, 2018
    Member:
    #260845
    Messages:
    11
    Gender:
    Male
    First Name:
    Brayden
    Vehicle:
    2006 Tacoma sr5 trd off-road
    Tires, rims, air intake, exhaust, lights, radio, new clutch
    My truck is a V6 2006 Tacoma and it's throwing the p420 and sometimes the p0430 code. I did some research and have come to the conclusion that it's my "o2 sensor" but I see the Tacoma has 4 catalytic converters with 2 A/F sensors as well as 2 O2 sensors. I have no clue which of the sensors is bad or what even to do. Any help or advice will be greatly appreciated!!!
     
    Blackbeast06taco, Jan 14, 2020
    #1
  2. Jan 14, 2020 at 10:50 AM
    #2
    memario1214

    #2
    memario1214 Hotshot Offroad Moderator Vendor

    Joined:
    Oct 1, 2009
    Member:
    #23628
    Messages:
    20,189
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    Male
    First Name:
    Colton
    Missoula, MT
    Vehicle:
    SOLD - 05 Dub Cab TRD Sport 4x4, CURRENT - '21 Tundra MGM Limited
    That is the sensor between the front and rear sets of cats. Theres a lot of things that could be the culprit though.

    I would probably start here:
    https://www.tacomaworld.com/threads/trouble-code-p0420.120107/

    A search for P0420 on TW here should yield lots of discussion for you to mull over for your specific application.
     
    memario1214, Jan 14, 2020
    #2
  3. Jan 18, 2020 at 5:26 PM
    #3
    Blackbeast06taco

    #3
    Blackbeast06taco [OP] Member

    Joined:
    Jul 28, 2018
    Member:
    #260845
    Messages:
    11
    Gender:
    Male
    First Name:
    Brayden
    Vehicle:
    2006 Tacoma sr5 trd off-road
    Tires, rims, air intake, exhaust, lights, radio, new clutch
    Thank you!
     
    Blackbeast06taco, Jan 18, 2020
    #3

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