I got that BUT for a certain few 01+ it runs diagnostics mode regardless of the codes being tuned out.. I don't think I have the problem BUT after I had to remove the cat my rear o2 isn't working anymore .4 to .5 and that's it.. I know the last time my rear o2 didn't work and I fixed it my mpg went up quite a bit so I'm just curious.. maybe a o2 sim might work but I have a good o2 in there right now

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