1. Welcome to Tundras.com!

    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 Tundra discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other Tundra owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site
    Quick Links: Amazon DTA Strut set Lisle 22800 stud installer - no good for front studs? Camper Shell / Tailgate Weatherproofing Upgrade / repair plan advice Small Transmission Drip, repair? 2003 SR5 frame replacement????

Oxygen sensor replacement 2003 AC

Discussion in '1st Gen Tundras (2000-2006)' started by Voss, Feb 12, 2022.

Page 2 of 2
  1. Feb 13, 2022 at 4:21 PM
    #31
    BubbaW

    #31
    BubbaW Blessed 2 B above Ground

    Joined:
    Aug 19, 2019
    Member:
    #34845
    Messages:
    3,757
    First Name:
    Bubba
    Where Eagles Nest
    Vehicle:
    04 DC LTD 4X4 4.7 V8
    T150 Lover
    If your scanner will read the code #, that number can help determine which side the issue exists. Your bad or unplugged AF sensor will most definitely cause an engine to shutdown.

    Symptoms of a Bad or Failing Air Fuel Ratio Sensor | YourMechanic Advice

    Correct me if wrong but you were dealing with rear sensors ?
    Rear sensors only monitor the cats efficiency and the ECM does not use it's readings in making any adjustments.
     
    Last edited: Feb 13, 2022
    BubbaW, Feb 13, 2022
    #31
    Voss[OP] likes this.
  2. Feb 13, 2022 at 4:27 PM
    #32
    FirstGenVol

    #32
    FirstGenVol Check the name tag. You're in my world now.

    Joined:
    Dec 13, 2018
    Member:
    #22934
    Messages:
    14,150
    East TN
    Vehicle:
    2002 AC TRD 4x4 V8
    True. I replaced all 4 but it was a rear sensor that went "bad".
     
    FirstGenVol, Feb 13, 2022
    #32
  3. Feb 13, 2022 at 6:41 PM
    #33
    NickB_01TRD

    #33
    NickB_01TRD You don't need less cars, just more driveway.

    Joined:
    Jun 16, 2021
    Member:
    #64346
    Messages:
    2,677
    Gender:
    Male
    First Name:
    Nick
    KY
    Vehicle:
    01 Tundra V8 4X4 AC SR5 TRD
    Unhook the problem sensor completely and see if the truck will start. Also do battery reset as others have suggested
     
    NickB_01TRD, Feb 13, 2022
    #33
    Voss[OP] likes this.
  4. Feb 13, 2022 at 7:10 PM
    #34
    Voss

    #34
    Voss [OP] Dust in the wind

    Joined:
    Feb 28, 2019
    Member:
    #26833
    Messages:
    1,537
    Gender:
    Male
    First Name:
    Valod
    Vehicle:
    2003 AC TRD 4x4
    Thanks, scanner said Bank 2 sensor 1 which I believe is passenger side front sensor.
     
    Voss, Feb 13, 2022
    #34
  5. Feb 13, 2022 at 7:15 PM
    #35
    Voss

    #35
    Voss [OP] Dust in the wind

    Joined:
    Feb 28, 2019
    Member:
    #26833
    Messages:
    1,537
    Gender:
    Male
    First Name:
    Valod
    Vehicle:
    2003 AC TRD 4x4
    Will do thanks for the tip
     
    Voss, Feb 13, 2022
    #35
  6. Feb 13, 2022 at 7:17 PM
    #36
    Voss

    #36
    Voss [OP] Dust in the wind

    Joined:
    Feb 28, 2019
    Member:
    #26833
    Messages:
    1,537
    Gender:
    Male
    First Name:
    Valod
    Vehicle:
    2003 AC TRD 4x4
    And here I almost forgot my long lost brother goes through the same weird stuff I do lol.
     
    Voss, Feb 13, 2022
    #36
    FirstGenVol[QUOTED] likes this.
  7. Feb 13, 2022 at 7:18 PM
    #37
    bfunke

    #37
    bfunke Tundra Curmudgeon

    Joined:
    Oct 13, 2019
    Member:
    #37321
    Messages:
    2,400
    Gender:
    Male
    First Name:
    Bryan
    South Carolina
    Vehicle:
    2018 SR-5 CM 5.7, 2000 SR-5 AC 4.7L
    Put one of the old ones in where the bad sensor is and see what happens.
     
    bfunke, Feb 13, 2022
    #37
    Voss[OP] likes this.
  8. Feb 13, 2022 at 8:10 PM
    #38
    Jack McCarthy

    #38
    Jack McCarthy Working remotely from the local pub

    Joined:
    Nov 2, 2020
    Member:
    #54409
    Messages:
    10,256
    Gender:
    Male
    First Name:
    Bill
    North of Boston
    Vehicle:
    02 Tundra AC SR5 V8 4x4
    If it wasn't a poor connection, swap it with the sensor you replaced to see if the truck will start up and run as @bfunke recommended. Also, there should be a spec on the expected resistance of these sensors you can measure.
     
    Jack McCarthy, Feb 13, 2022
    #38
    Voss[OP] likes this.
  9. Feb 13, 2022 at 8:17 PM
    #39
    Voss

    #39
    Voss [OP] Dust in the wind

    Joined:
    Feb 28, 2019
    Member:
    #26833
    Messages:
    1,537
    Gender:
    Male
    First Name:
    Valod
    Vehicle:
    2003 AC TRD 4x4
    Ya I saved the old ones for just this occasion.
     
    Voss, Feb 13, 2022
    #39
    Jack McCarthy likes this.
  10. Feb 13, 2022 at 8:19 PM
    #40
    Voss

    #40
    Voss [OP] Dust in the wind

    Joined:
    Feb 28, 2019
    Member:
    #26833
    Messages:
    1,537
    Gender:
    Male
    First Name:
    Valod
    Vehicle:
    2003 AC TRD 4x4

    I’ll report back once I check but I’m positive the connections are good.
     
    Voss, Feb 13, 2022
    #40
    Jack McCarthy[QUOTED] likes this.
  11. Feb 13, 2022 at 8:39 PM
    #41
    Jack McCarthy

    #41
    Jack McCarthy Working remotely from the local pub

    Joined:
    Nov 2, 2020
    Member:
    #54409
    Messages:
    10,256
    Gender:
    Male
    First Name:
    Bill
    North of Boston
    Vehicle:
    02 Tundra AC SR5 V8 4x4
    If it's definitely looking like the new sensor is bad, you should be able to swap it with another new one from Toyota since their OEM parts warranty is typically 12 months.
     
    Jack McCarthy, Feb 13, 2022
    #41
    Voss[OP] likes this.
  12. Feb 13, 2022 at 8:47 PM
    #42
    Voss

    #42
    Voss [OP] Dust in the wind

    Joined:
    Feb 28, 2019
    Member:
    #26833
    Messages:
    1,537
    Gender:
    Male
    First Name:
    Valod
    Vehicle:
    2003 AC TRD 4x4
    That’s some relief. I took so long to install these, thought maybe McGeorge wouldn’t cover them. Hopefully all works out for the best.
     
    Voss, Feb 13, 2022
    #42
    Jack McCarthy[QUOTED] likes this.
  13. Feb 14, 2022 at 2:16 PM
    #43
    Voss

    #43
    Voss [OP] Dust in the wind

    Joined:
    Feb 28, 2019
    Member:
    #26833
    Messages:
    1,537
    Gender:
    Male
    First Name:
    Valod
    Vehicle:
    2003 AC TRD 4x4
    Well it’s was completely disconnected. Could’ve sworn it clicked in. All is well for now.

    appreciate the input all
     
    Voss, Feb 14, 2022
    #43
    BubbaW, Jack McCarthy, FirstGenVol and 2 others like this.
  14. Feb 14, 2022 at 2:39 PM
    #44
    shifty`

    #44
    shifty` Just like witches at black masses

    Joined:
    Jun 20, 2020
    Member:
    #48239
    Messages:
    28,362
    ATL
    Vehicle:
    '06 AC Limited V8/4WD
    (see signature for truck info)
    "Oops"

    But hey, those are the best mistakes, the ones that can be resolved in less than a minute or two, and didn't cause any obvious damage.
     
    shifty`, Feb 14, 2022
    #44
    Jack McCarthy and Voss[OP] like this.
  15. Feb 14, 2022 at 4:08 PM
    #45
    Jack McCarthy

    #45
    Jack McCarthy Working remotely from the local pub

    Joined:
    Nov 2, 2020
    Member:
    #54409
    Messages:
    10,256
    Gender:
    Male
    First Name:
    Bill
    North of Boston
    Vehicle:
    02 Tundra AC SR5 V8 4x4
    [​IMG]
    Mystery solved!
     
    Jack McCarthy, Feb 14, 2022
    #45
    Voss[QUOTED][OP] likes this.
  16. Feb 14, 2022 at 5:25 PM
    #46
    BubbaW

    #46
    BubbaW Blessed 2 B above Ground

    Joined:
    Aug 19, 2019
    Member:
    #34845
    Messages:
    3,757
    First Name:
    Bubba
    Where Eagles Nest
    Vehicle:
    04 DC LTD 4X4 4.7 V8
    T150 Lover
    Do you recall what the PXXX # was. Just curious what an unplugged AF sensor would record.
     
    BubbaW, Feb 14, 2022
    #46
    Voss[QUOTED][OP] likes this.
  17. Feb 14, 2022 at 5:27 PM
    #47
    Voss

    #47
    Voss [OP] Dust in the wind

    Joined:
    Feb 28, 2019
    Member:
    #26833
    Messages:
    1,537
    Gender:
    Male
    First Name:
    Valod
    Vehicle:
    2003 AC TRD 4x4
    I don’t
     
    Voss, Feb 14, 2022
    #47
Page 2 of 2
Register FREE to Reply!

Products Discussed in

ARES 70039-3/8" Drive by 7/8" (22mm) Offset Oxygen Sensor Socket - Wire Gate Accesses Sensor from Side, Preventing Damage to Wires
$12.42
To Top