1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site
    Quick Links: I'm looking for a 12v power supply Sweet little Amazon prime deal!!! Bed lights. Wheel Well Liner "Grommets" Old truck road trip nerves Best OBD Scanner for 98 Taco

Bank 1 Sensor 2 location

Discussion in '1st Gen. Tacomas (1995-2004)' started by Dakota21601, Dec 16, 2019.

  1. Dec 16, 2019 at 4:58 PM
    #1
    Dakota21601

    #1
    Dakota21601 [OP] Well-Known Member

    Joined:
    Dec 2, 2019
    Member:
    #312337
    Messages:
    47
    Gender:
    Male
    First Name:
    Justyn
    Which bank and sensor is this? I am throwing a code and looking to just replace that sensor. Truck is at 227k so I figure the sensor could be bad and not just reading some other issue going on. Plus its an easy start and that sensor has paid its dues either way. hahah.
     
    Dakota21601, Dec 16, 2019
    #1
  2. Dec 16, 2019 at 4:59 PM
    #2
    Dakota21601

    #2
    Dakota21601 [OP] Well-Known Member

    Joined:
    Dec 2, 2019
    Member:
    #312337
    Messages:
    47
    Gender:
    Male
    First Name:
    Justyn
    Also does anyone recommend a specific replacement brand/part number?
     
    Dakota21601, Dec 16, 2019
    #2
  3. Dec 16, 2019 at 6:52 PM
    #3
    CD20H

    #3
    CD20H Well-Known Member

    Joined:
    Oct 25, 2014
    Member:
    #141019
    Messages:
    735
    Gender:
    Male
    First Name:
    Ben
    North Texas
    Vehicle:
    2004 Double Cab TRD 4x4 Limited
    Magnuson Kompressor, OME lift kit, JBA Headers, junky Sony radio.
    It is the O2 sensor AFTER the catalytic convertor. The front one ( closest to the engine ) is the Air/Fuel sensor also called the Bank 1 sensor 1.
     
    CD20H, Dec 16, 2019
    #3
  4. Dec 16, 2019 at 7:14 PM
    #4
    onakat

    #4
    onakat Well-Known Member

    Joined:
    Jul 2, 2016
    Member:
    #191075
    Messages:
    1,672
    Gender:
    Female
    Canada
    Vehicle:
    2000 indestructaco!
    Hello, welcome to tacoma world :)

    As said above, bank 1 sensor 2 is the rear sensor, behind the catalytic.

    bank 1 sensor 1, the front one near the engine is, depending on the model year, an Air/Fuel sensor (2000 and after) or a regular o2 sensor (before 2000)

    Only get DENSO sensor. Toyotas are known to be picky with other brands

    As for part number, what engine and transmission do you have?
     
    onakat, Dec 16, 2019
    #4
    eon_blue likes this.
  5. Dec 16, 2019 at 7:17 PM
    #5
    eon_blue

    #5
    eon_blue Most Improved Member

    Joined:
    Mar 4, 2016
    Member:
    #180213
    Messages:
    66,900
    Gender:
    Male
    First Name:
    Ryan
    Vehicle:
    '04 TRD 3.4l 4x4 5sp manual Xtraca & '96 4runner 4x4 5spd manual
    Agreed with above, only get Denso sensors for these trucks. Anything else is likely to cause further problems. And watch out for fake Densos online, if it's ridiculously cheap it's likely a fake.

    The one after the cat is easy to get to. The wiring connector for it is under the passenger seat but not hard to pull up.
     
    eon_blue, Dec 16, 2019
    #5
  6. Dec 16, 2019 at 7:17 PM
    #6
    Dakota21601

    #6
    Dakota21601 [OP] Well-Known Member

    Joined:
    Dec 2, 2019
    Member:
    #312337
    Messages:
    47
    Gender:
    Male
    First Name:
    Justyn
    Ya. I guess that would help. haha. Its a 3.4 AT but not sure exactly which auto. Its a 4x4 ext cab if that helps. Or where can i find the actual trans model anyways. I need to know this for my fluid flush. Seems there are multiple options. Thanks guys!!
     
    Dakota21601, Dec 16, 2019
    #6
  7. Dec 16, 2019 at 7:17 PM
    #7
    eon_blue

    #7
    eon_blue Most Improved Member

    Joined:
    Mar 4, 2016
    Member:
    #180213
    Messages:
    66,900
    Gender:
    Male
    First Name:
    Ryan
    Vehicle:
    '04 TRD 3.4l 4x4 5sp manual Xtraca & '96 4runner 4x4 5spd manual
    Plug your VIN into partsouq.com and it'll tell you which part number you need for it. There are a variety of rear o2 sensors based on your truck's year and options
     
    eon_blue, Dec 16, 2019
    #7
  8. Dec 16, 2019 at 7:56 PM
    #8
    onakat

    #8
    onakat Well-Known Member

    Joined:
    Jul 2, 2016
    Member:
    #191075
    Messages:
    1,672
    Gender:
    Female
    Canada
    Vehicle:
    2000 indestructaco!
    for auto trans ext cab, you need
    $61 DENSO 234-4189 Oxygen Sensor
    DENSO 234-4189

    YOu can find the transmission model on the vehicle information sticker on the driver's side door jamb, lower right corner. It will be written A340... or R150...

    Automatic transmission fluid calls for DEXRON II but it has since been replaced with DEXRON III

    Do not put anything else than DEXRON III. DEXRON 4 and above are a completely different formula and should not be put in a D-III and lower transmission
     
    Last edited: Dec 16, 2019
    onakat, Dec 16, 2019
    #8
    Wyoming09 and Black DOG Lila like this.
  9. Jan 6, 2020 at 9:40 PM
    #9
    DustyGreenTaco

    #9
    DustyGreenTaco Member

    Joined:
    Jan 14, 2019
    Member:
    #279314
    Messages:
    21
    Gender:
    Male
    First Name:
    Ant
    Sacramento Ca
    Vehicle:
    Green 99 2wd base model
    Header swap 2.5” Magnaflow exhaust
    Do you think the 44 dollar denso o2’s on rock auto are fake? I’ve heard of claims of fake denso from them in rl.
     
    DustyGreenTaco, Jan 6, 2020
    #9
  10. Jan 6, 2020 at 9:47 PM
    #10
    eon_blue

    #10
    eon_blue Most Improved Member

    Joined:
    Mar 4, 2016
    Member:
    #180213
    Messages:
    66,900
    Gender:
    Male
    First Name:
    Ryan
    Vehicle:
    '04 TRD 3.4l 4x4 5sp manual Xtraca & '96 4runner 4x4 5spd manual
    Id be very wary...Rockauto is usually a decent place to get parts but 44 bucks is at least half what they should cost
     
    eon_blue, Jan 6, 2020
    #10
    DustyGreenTaco[QUOTED] and Wyoming09 like this.

Products Discussed in

Denso 234-4189 Oxygen Sensor
$60.51
To Top