Code p0420 options - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Geelouise · 09-11-2016, 01:52 PM

So here is the deal I've been having a lot of trouble with my catalytic converters. i had replaced the right side (bank 2) converter about a year or so ago but it was under some kinda warranty,, I didn't pay of out pocket. Recently I received the dreaded p0420 engine code so the shop I took it to said that the converter was bad. It was bank 1.,,he told me that it needed to be replaced but I'll be honest I didn't have $1000 to spend on a new converter so he told me he would hollow or gut the cats. I said ok but how will I pass my emissions test? He told me that I can run the gutted cats since my inspection doesn't go out until next year.. drive it until I can afford to get a tune and when I go to get it inspected they will see that there is some cats in place even tho they don't function so I'll pass. Is this legit?? I don't wanna fry the engine by driving it daily with no tune either

TooCool5 · 09-11-2016, 02:15 PM

I would not do this, This code relates to threshold efficiency of the cat is beyond limit.

It is sometimes fixed by cleaning the MAF and or changing the rear 02, running top tier fuel etc..
Your call.

CFD · 09-11-2016, 02:22 PM

Many times failed converters are the result of other problems up stream. Gutting them may alleviate the code but not necessarily the root problem so maybe further diagnosis is needed.

Geelouise · 09-12-2016, 11:57 AM

Quote:

Originally Posted by CFD

Many times failed converters are the result of other problems up stream. Gutting them may alleviate the code but not necessarily the root problem so maybe further diagnosis is needed.

He had told me it could be from reeving the engine,, is that true??? I mean I get on the throttle a lot but I've done that on a lot of cars and never had converts failing

Geelouise · 09-12-2016, 11:58 AM

Quote:

Originally Posted by TooCool5

I would not do this, This code relates to threshold efficiency of the cat is beyond limit.

It is sometimes fixed by cleaning the MAF and or changing the rear 02, running top tier fuel etc..
Your call.

Yeah I'll just wait until I can get the tune,, so do you think it's ok to hollow the cats out get a tune and I'll still pass emission testing in tx? I've seen some guys on this website do it but idk if it's smart. $1000 for a converter I just can't do right now but this is my DD

Geelouise · 09-12-2016, 12:37 PM

Also just something to throw out there this AM my car isn't showing there's a check engine light. No codes,, so I'm wondering if I should get a second opinion on if the car has a bad converter

Jylee · 09-12-2016, 01:05 PM

The CAT is warranted for 8 years and 80k miles.

justa25thTA · 09-12-2016, 03:29 PM

get some anti-foulers from the auto parts store. Cheap enough to try and they cured my code.

Eddiefuzz · 09-12-2016, 06:47 PM

Invest in an OBD2 scan tool and just clear the code! I get 0420 and 0430 every time I drive over 200 miles straight. I got it yesterday, went to pick my son up, 220 mile round trip. I have a HYPERTECH tuner, cleared them and they won't come back until I make that trip again. Of course the dealer is going to sell you cats everytime the CEL comes up, that's how they make money.

1Coopgt · 09-12-2016, 06:51 PM

Quote:

Originally Posted by justa25thTA

get some anti-foulers from the auto parts store. Cheap enough to try and they cured my code.

What the hell are Anti-Foulers ? Link please ?

Geelouise · 09-12-2016, 09:12 PM

Quote:

Originally Posted by Jylee

The CAT is warranted for 8 years and 80k miles.

That's how I got one of the cats replaced but I'm well over 100,000 now

Geelouise · 09-12-2016, 09:13 PM

Quote:

Originally Posted by Eddiefuzz

Invest in an OBD2 scan tool and just clear the code! I get 0420 and 0430 every time I drive over 200 miles straight. I got it yesterday, went to pick my son up, 220 mile round trip. I have a HYPERTECH tuner, cleared them and they won't come back until I make that trip again. Of course the dealer is going to sell you cats everytime the CEL comes up, that's how they make money.

Well shit maybe I just freaked out over nothing

justa25thTA · 09-13-2016, 09:19 AM

Quote:

Originally Posted by Eddiefuzz

Invest in an OBD2 scan tool and just clear the code! I get 0420 and 0430 every time I drive over 200 miles straight. I got it yesterday, went to pick my son up, 220 mile round trip. I have a HYPERTECH tuner, cleared them and they won't come back until I make that trip again. Of course the dealer is going to sell you cats everytime the CEL comes up, that's how they make money.

Won't pass inspection (in Texas anyways) because the monitors won't be ready.

justa25thTA · 09-13-2016, 09:20 AM

Quote:

Originally Posted by 1Coopgt

What the hell are Anti-Foulers ? Link please ?

https://www.walmart.com/ip/Dorman-42...&wl13=&veh=sem

09-11-2016, 01:52 PM	#1
Geelouise Drives: 2011 v6 Join Date: Jan 2016 Location: Texas Posts: 148	Code p0420 options So here is the deal I've been having a lot of trouble with my catalytic converters. i had replaced the right side (bank 2) converter about a year or so ago but it was under some kinda warranty,, I didn't pay of out pocket. Recently I received the dreaded p0420 engine code so the shop I took it to said that the converter was bad. It was bank 1.,,he told me that it needed to be replaced but I'll be honest I didn't have $1000 to spend on a new converter so he told me he would hollow or gut the cats. I said ok but how will I pass my emissions test? He told me that I can run the gutted cats since my inspection doesn't go out until next year.. drive it until I can afford to get a tune and when I go to get it inspected they will see that there is some cats in place even tho they don't function so I'll pass. Is this legit?? I don't wanna fry the engine by driving it daily with no tune either

09-11-2016, 02:15 PM	#2
TooCool5 Drives: 2010 Camaro 1LS 3.6 LLT V6 325 HP Join Date: May 2009 Location: LS Posts: 4,244 View My Garage	I would not do this, This code relates to threshold efficiency of the cat is beyond limit. It is sometimes fixed by cleaning the MAF and or changing the rear 02, running top tier fuel etc.. Your call. __________________ 2010 Camaro Auto, Inferno Orange, Titanium Interior, Gearhead Wheels AIRAID CAI

09-12-2016, 03:29 PM	#8
justa25thTA Drives: 2011 Camaro SS/RS LS3 Join Date: Aug 2010 Location: Texas Posts: 1,632	get some anti-foulers from the auto parts store. Cheap enough to try and they cured my code. __________________ Yeah, I'll get around to it...

09-11-2016, 02:22 PM	#3
CFD Drives: 2SS/RS L99 BLACK Join Date: Apr 2010 Location: Franklin , MA Posts: 6,696	Many times failed converters are the result of other problems up stream. Gutting them may alleviate the code but not necessarily the root problem so maybe further diagnosis is needed.

09-12-2016, 12:37 PM	#6
Geelouise Drives: 2011 v6 Join Date: Jan 2016 Location: Texas Posts: 148	Also just something to throw out there this AM my car isn't showing there's a check engine light. No codes,, so I'm wondering if I should get a second opinion on if the car has a bad converter

09-12-2016, 01:05 PM	#7
Jylee Drives: 2012 2LT Join Date: Aug 2013 Location: Sugarland, TX Posts: 96	The CAT is warranted for 8 years and 80k miles.

09-12-2016, 06:47 PM	#9
Eddiefuzz Drives: 2011 RS Join Date: Apr 2011 Location: Florence New Jersey Posts: 1,125	Invest in an OBD2 scan tool and just clear the code! I get 0420 and 0430 every time I drive over 200 miles straight. I got it yesterday, went to pick my son up, 220 mile round trip. I have a HYPERTECH tuner, cleared them and they won't come back until I make that trip again. Of course the dealer is going to sell you cats everytime the CEL comes up, that's how they make money.