Hey, I have a 2013 328i and it recently threw a check engine light, it started to run rich. I had it scanned and it said it was a PO420. Was curious if anyone had this problem and if it was possible to fix it at home ?
P0420 code means your catalytic converter is not operating at maximum efficiency. Usually this means your catalytic converter needs to be replaced or there is a problem with your oxygen sensors. Not knowing your mechanical skills as to whether you can fix this at home, did you search the forum for what others have done when encountering this code?
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