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Post catalytic too rich. 2096 is to lean one of several things is going on and none are cheap. 1) the pre cat is bad not doing its job of scrubbing. 2) pre cat o2 sensor is bad causing car to run rich and post cat sensor is picking it up or 3 post cat sensor is bad and not reading correct. or any number of the 3. there is the possibility of dirty injectors from crap gas causing it though the pre cat sensor should read the same thing ... not sure what that code is. I'm gonna do a full system clean now to see if that will fix it or at least help it.
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∙ 12y ago
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