So just threw a P0420 code
#1
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Join Date: Oct 2011
Location: Southern, NH
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So just threw a P0420 code
A little disappointed in under a week the car I thought that was going to be reliable already throws a code, but it is what it is, maybe it was already there and the guy failed to mention it to me,anyway. From what I read up on it seems to be the cat is dying and I took a look at it today and its seen better days from what I gathered. Now what is the best replacement for the cat, a hi-flo, test pipe? Im looking for recommendations, Money is tight but I dont wanna get a cheap ebay cat haha. I have a bosal exhaust tip, so I check into them, they have a bosal OE replacement for 175$, any one tried this?
#2
Honda-Tech Member
Re: So just threw a P0420 code
Don't mistake a CEL for an unreliable Honda. All cars require maintenance, especially exhaust parts w/that much mileage. I'm guessing the prior owner reset the battery/ECU prior to you purchasing it so that it didn't show the CEL until now.
Anyway. I don't know what your emission laws are in NH and if you're concerned about smog or not. If you get a test pipe you'll need to get an o2 simulator otherwise the CEL will be on all the time. Search around, this has been covered lots of times on here.
Anyway. I don't know what your emission laws are in NH and if you're concerned about smog or not. If you get a test pipe you'll need to get an o2 simulator otherwise the CEL will be on all the time. Search around, this has been covered lots of times on here.
#3
Re: So just threw a P0420 code
p0420 could be 2 things, maybe your o2 sensor or maybe your cat try changing the 02 sensor first thats the cheapest, if it still throwing you a code its time to change the cat
i had that problem too but im too cheap to buy a cat but instead i put a defouler and the cel hasnt come back on ever since
i had that problem too but im too cheap to buy a cat but instead i put a defouler and the cel hasnt come back on ever since
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