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Bank one sensor one

Discussion in '2nd Gen. Tacomas (2005-2015)' started by tcla6306, Feb 2, 2025.

  1. Feb 2, 2025 at 4:04 PM
    #1
    tcla6306

    tcla6306 [OP] Member

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    2007 Tacoma 4x4 2.7 engine 5 speed
    Can anyone tell me if I have these wires up right?

    IMG_1202.jpg
     
  2. Feb 2, 2025 at 4:09 PM
    #2
    Dm93

    Dm93 Test Don't Guess

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    No way to know like that, the sensor end colors vary. Even if it is it won't work long being those aren't sealed terminals, why did you cut the connector off?
     
  3. Feb 2, 2025 at 4:11 PM
    #3
    tcla6306

    tcla6306 [OP] Member

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    I didn’t cut the connectors off, I just bought the truck and it was wired like this but the obd codes are as follows

    IMG_1204.png
     
  4. Feb 2, 2025 at 4:19 PM
    #4
    TnShooter

    TnShooter The TacomaWorld Stray

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    Looks like a universal sensor.
    They don’t tend to play well with Toyotas.

    We’d need to know how the universal is supposed to be wired.
    Is it a Bosch?
     
  5. Feb 2, 2025 at 4:21 PM
    #5
    tcla6306

    tcla6306 [OP] Member

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    Yes it is a Bosch it looks like
     
  6. Feb 2, 2025 at 4:22 PM
    #6
    tcla6306

    tcla6306 [OP] Member

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    If I buy the denso o2 sensor, will the wires be the same color coated as the harness wires?
     
  7. Feb 2, 2025 at 4:25 PM
    #7
    TnShooter

    TnShooter The TacomaWorld Stray

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    No.
     
  8. Feb 2, 2025 at 4:26 PM
    #8
    Dm93

    Dm93 Test Don't Guess

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    If that's the case I'd suspect someone bought a "universal" sensor and tried to make it work which they will not because it's an AFR sensor not a standard O2 sensor, that would be the only reason to cut the connector off.

    I'd reccomend getting the correct sensor and connector and properly splicing it on with either solder and heatshrink or heat seal butt connectors.
     
  9. Feb 2, 2025 at 4:32 PM
    #9
    Dm93

    Dm93 Test Don't Guess

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    Need the details of your truck to provide the appropriate pinout for the connector, then all you need is to get a connector and sensor.
     
  10. Feb 2, 2025 at 4:38 PM
    #10
    TnShooter

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    Somewhere on here, I went over this once so the a previous member.
    Bosch has a diagram for Toyota universal sensors. But as you said, we need details on the truck first.

    I’m with you on OE sensor and plug.
     
  11. Feb 2, 2025 at 4:55 PM
    #11
    tcla6306

    tcla6306 [OP] Member

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    2007 Tacoma 2.7 engine and a 5 speed. It’s bank 1 sensor 1 o2 sensor, I have looked everywhere for a harness connector and cannot find one
     
  12. Feb 2, 2025 at 5:13 PM
    #12
    Dm93

    Dm93 Test Don't Guess

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    po35042 likes this.
  13. Feb 2, 2025 at 5:33 PM
    #13
    tcla6306

    tcla6306 [OP] Member

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    When I get it I will update
     
    Dm93 likes this.
  14. Feb 2, 2025 at 5:40 PM
    #14
    Dm93

    Dm93 Test Don't Guess

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    Here's the wire colors and pinout, view is looking into the connector.

    upload_2025-2-2_19-40-26.png
     

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