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Bad cats and no CEL?!

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    Bad cats and no CEL?!

    So exhaust has funky smell, car drives like it has a potatoe stuck in the exhaust and inpa shows pre and post cat voltage are in sync……it’s safe to assume my cats are bad.

    question is that the o2 and catalyst emissions monitors show not ready , but car has been driven for months without clearing Cel . Can the bad cats cause the status to remain “not ready” instead of throwing a CEL code?

    when I initially went to get my emissions inspection. Done the car would not communicate with the emissions computer (but comunicantes fine with personal scanner, inpa etc) can this “not ready” Status cause lack of communication /connection timeout with emissions computer? I figured it should still be able to communicate but just show status as not ready

    car gas not been driven in 10 years and I have a strong suspicion bmw or previous owner messed with the software /coding to somehow disable the catalyst Cel or had some funky tune on it . Any way to check this on bmw scanner , inpa , fpk etc ? The emissions communication recall shows done on service history and bmw scanner shows software version to be post recall as well.
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