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Did you ever have your issue resolved. I'm having the same code with my 04 mazda and I passed smog emissions in CA but failed visual and functional due to the check engine light being on. I want to fix the right problem and not spend too much on replacing the CATS at this point.
If I'm getting a CAT code, how would my car pass smog emissions? What is the best way to check emission related parts to get my car passed in the functional and visual department.