Hey everyone, I have a 2000 Accord EX in NH. My check engine light is showing P0420 code, catalyst. Pretty sure my cat needs replacing as I've had a pretty good rattle for about a year now that I can't physically see anywhere else on the car.

My question is will an decent aftermarket bolt on brand work? (magnaflow? walker?). I've heard from the dealership that it needs to be OEM to clear the code, however some people have said a good aftermarket one will satisy Honda's computer. Any experience with brands or techniques. Really need some advice as it's a pricey replacement.

Thanks in advance!!

-Nate

 

search is your fwiend. see this thread:

https://honda-tech.com/forums/honda-accord-1990-2002-2/99-accord-code-p0420-cat-conv-need-help-3068452/

 

I replaced mine with a magnaflow with no computer issues.