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Resetting check engine light

Discussion in '1st Gen. Tacomas' started by hardtaco, Jun 28, 2009.

  1. Jun 28, 2009 at 9:48 AM
    #1
    hardtaco

    hardtaco [OP] Well-Known Member

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    I am going to be replacing my O2 Sensor soon, and was wondering if I need to disconnect the positive terminal connection at my battery afterwords, to get the check engine light to go away. Will this do it?
     
  2. Jun 28, 2009 at 10:13 AM
    #2
    ChrisYoTaCoMa

    ChrisYoTaCoMa Chrome's for Harleys and old farts

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    Disconnecting the battery will not reset the light in an OBD2 system, it has to be reset with a scan tool. Autozone/Advance auto parts will do it for free.
     
  3. Jul 1, 2009 at 1:53 PM
    #3
    Whippet

    Whippet Custom User

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    Just FWIW, a local AutoZone here in Costa Mesa, California told me yesterday that they no longer read/scan error codes, or reset check engine lights. They will only test alternators, batteries, starters. I don't know if that is just that particular store, or the whole chain...
     
  4. Jul 1, 2009 at 2:00 PM
    #4
    Brunes

    Brunes abides. Thor

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    I think it changes shop to shop...Cause they read codes near me- but they won't reset them.
     
  5. Jul 1, 2009 at 5:47 PM
    #5
    ChrisYoTaCoMa

    ChrisYoTaCoMa Chrome's for Harleys and old farts

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    It has to be the store by you. I was at the store near me in FL last week and the guy next to me with an S-10(poor sap) was getting his checked. It may be the store by you has a bunch of lazy asses that don't want to do it.
     
  6. Jul 2, 2009 at 6:06 PM
    #6
    kevhogaz

    kevhogaz Low Speed, High Drag

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    Try disconnecting the negative battery terminal for 30 seconds, that should clear the computers memory, and reset the light. But, it also will clear all your readiness monitors, so if you're going through emissions any time soon, you'll need to wait until you make two drive cycles for the monitors to reset.
     
  7. Jul 2, 2009 at 7:28 PM
    #7
    pittim

    pittim Play stupid games, win stupid prizes

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    Autozone won't reset, they'll only read. I've never asked if they would reset for me, however.

    CA had some new law or something that said that Autozone can't scan anymore. Go figure it happened in CA.


    Disconnecting the negative terminal will reset the light (i disconnected for like 5 min or so) but it will also reset your trip odometers and radio presets.
     
  8. Jul 3, 2009 at 5:20 AM
    #8
    attentionwhore

    attentionwhore Durty Whore

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    I just changed my O2 sensor and VatoZone reset it for me. The douche behind the counter said "we arent supposed to do that" as he picked up the scan tool and headed out to the parking lot. No more CEL!
     
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