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Thread: E69 controller help..........PLZ

  1. #1
    Potential Tuner
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    E69 controller help..........PLZ

    Anyone know what option to select to allow rear o2's to be deleted but still pass I/m readiness test? Theres not a 'no error' reported option on these? Any help would be great. I've looked can't find any info on this? Thanks
    Last edited by 15ltz6.2; 04-21-2020 at 05:00 PM.

  2. #2
    Advanced Tuner ZeroBoostBuick's Avatar
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    MILL Off (Stored Fault) is the only thing you can do. It will tell the Emissions testing facility the Rear 02 is Not-Ready. And as far as I know, In most States you're allowed 1 Not-Ready monitor and still pass.

    No matter what ECM, even getting rid of the fault completely will still Trip a Not-Ready state for the rear O2 when doing emissions test.

  3. #3
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    Thanks I know in other gm ecm's its easy just 'no error reported' and tests still completes and good to go. In these ecm's theres nothing else that can be down? What do all the camaro guys do when they remove rear o2's? Appreciate your response just didn't figure these ecu's would be so complicated?