i got a code. plz help. newb in the house

angelusnhc

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code i got from autozone.

p0420
catalyst efficiency
below threshold
(bank 1)

what do i do and what can i do to fix it
 

xi0utlawstarix

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under $5 from autozone and some drilling
i even passed inspection

oem cat should be around $500
8 years / 80k miles warranty on emission stuff
 

angelusnhc

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:dumb:
under $5 from autozone and some drilling
i even passed inspection

oem cat should be around $500
8 years / 80k miles warranty on emission stuff

what are you talking about dollars and some drilling? i dont got 500 to spare on a cat? also is the car safe to drive with this problem?
 

angelusnhc

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google defouler trick or search the forum
the car should be safe to drive

im on a quick lunch break so i got to search after 5 when i get home. but with this trick would i eventually need to replace the cat anyways? in other words should i just use this as a reason to get a new cat and exhaust? also the guy at autozone said my gas mileage will go down big time. will this trick fix that problem as well?
 

Sketch o5

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youre catalytic converter is getting old and needs to be replaced. the code isnt bad, i had it pretty much the whole time i had my car. after a while tho, the cat will start to rattle due to the insides going to hell. youll need a new cat eventually, so its up to you if you want to get a new one now or later.
 

angelusnhc

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i dont got a drill so im guessing i cant get this mod done :-(. and do you believe this trick will get you better gas mileage?
 
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