Replaced Rear O2 sensor with O2 sim for P0420 Code. - FirebirdV6.com/CamaroV6.com Message Board

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Replaced Rear O2 sensor with O2 sim for P0420 Code.

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  • Replaced Rear O2 sensor with O2 sim for P0420 Code.

    I was just wondering, how long will it take for my SES to go out? should it happen instantly or will it take awhile?
    1997 Camaro RS W/T-Tops<br />All Stock / 200 HP

  • #2
    Re: Replaced Rear O2 sensor with O2 sim for P0420 Code.

    You have to reset the light. Take it to a parts store or somewhere they can reset it, because it has a pending code in the PCM still.

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    • #3
      Re: Replaced Rear O2 sensor with O2 sim for P0420 Code.

      Originally posted by Need4Camaro View Post
      I was just wondering, how long will it take for my SES to go out? should it happen instantly or will it take awhile?
      There's a code reader scanner you can buy at any parts store for OBDII and it does have an erase selection on it.

      OR you can simply unplug your battery for a couple of minutes and plug back up again. I haven't done this with my 4th gen bird but it works with my other cars.

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      • #4
        Re: Replaced Rear O2 sensor with O2 sim for P0420 Code.

        What docta said, they usually have ones you can use in the store, reset it real quick for you.
        Team NoVa

        2000 Firebird- Intake, Pacesetters, !cat, full 2.5 to flowcrapster, 1.9 rockers, LS6 springs and Intense modded retainers, WS6 speedlines, T/A bumpers and hatch, 5 spd swapped, SOON TO BE nitrous'd and cammed.

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        • #5
          Re: Replaced Rear O2 sensor with O2 sim for P0420 Code.

          I went to the autostore and had it reset by O-Reilly's...yay.

          Im hoping I never see this code again. Im ganna push for an Emissions test tomorrow after work.
          1997 Camaro RS W/T-Tops<br />All Stock / 200 HP

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          • #6
            Re: Replaced Rear O2 sensor with O2 sim for P0420 Code.

            I put a sim in mine about 5 months ago now, and no problems since.

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