Cel p0420
Cel p0420
I drove my car this morning and it popped up on me i have a cheap obd2 code reader that tells me the code but thats it. I did my research on it and it seems to be either my o2 sensor or my bank one catalytic converter. and my code reader wont erase the code either.
If this is a genuine catalyst efficiency failure (and not a faulty downstream O2 sensor) you can try a O2 sensor defouler, which will keep the O2 from sensing that the catalytic converter has failed. XLR8 or HeelToeAuto should have these.
problem solved for now i took my car by my boy today and he put some seafoam into vaccum line and he erased the code car runs much smoother and idles much better
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