P0420 & P0430 at same time

[Thats550]

Any gas additives used or anything? Really kind of rare to have them both go South at the same time.

so I did have a 2 step that I installed and used like maybe at the most 10 time before I started getting codes and took it off. I did add some cataclean after getting these codes to try n maybe clean things out some but other than that no

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[K4fxd]

How many miles on your car. The feds make the auto manufacturers warrant the cats for 8 years and 80,000 miles.

 

[Thats550]

How many miles on your car. The feds make the auto manufacturers warrant the cats for 8 years and 80,000 miles.

My vehicle has 43k miles it's a 2017 but it has rebuilt title. Only from minor front end damage so im not sure if that would apply anymore. But if we are for sure it's my cats I'll replace em, or delete em.

 

[Dave2013M3]

My vehicle has 43k miles it's a 2017 but it has rebuilt title. Only from minor front end damage so im not sure if that would apply anymore. But if we are for sure it's my cats I'll replace em, or delete em.

I don't think that will affect the Federal Emissions Warranty. Take it to the dealership and let them play with it.

 

[ZZMike]

It will be up to the dealer if they want to honor emissions on a branded title.

Depending on two-step usage, you may have kicked the substrate out of them. You can always drop the mid pipes and inspect the cats.

 

[ORRadtech]

My vehicle has 43k miles it's a 2017 but it has rebuilt title. Only from minor front end damage so im not sure if that would apply anymore. But if we are for sure it's my cats I'll replace em, or delete em.

I don't think that will affect the Federal Emissions Warranty. Take it to the dealership and let them play with it.

It actually does void any and all warranties including Federal Emissions warranties.

https://wtop.com/consumer-news/2022/03/edmunds-what-actions-can-void-your-new-car-warranty/

 

[Dave2013M3]

It actually does void any and all warranties including Federal Emissions warranties.

https://wtop.com/consumer-news/2022/03/edmunds-what-actions-can-void-your-new-car-warranty/

Wow did not know that. Thanks, you learn something everyday.

 

[Thats550]

I don't think that will affect the Federal Emissions Warranty. Take it to the dealership and let them play with it.

Interesting okay I mean it can't hurt to see

 

[Thats550]

Interesting okay I mean it can't hurt to see

Never-ending I see. Well ya I can inspect the cats and see if it is the cats I'll probably get long tubes and annexhuast set up

 

[Thats550]

Nevermind i see that its void. Well ya I can inspect the cats and see if it is the cats I'll probably get long tubes and annexhuast set up

 

[Thats550]

It will be up to the dealer if they want to honor emissions on a branded title.

Depending on two-step usage, you may have kicked the substrate out of them. You can always drop the mid pipes and inspect the cats.

I never went very hard on the 2 step and never used it for more than a few seconds at a time I was actually very careful with it and as soon as I seen a check engine light I took it off. But sometimes in the morning when I start the mustang I smell gas from the exhaust

 

[junits15]

These cats are notoriously fragile, you almost certainly damaged them with 2 step sorry to say. I damaged mine with burbles. My driver side was totally toast and my passenger side was barely hanging on.

What likely happened is that the substrates cracked and gasses are passing by the catalyst. I'm with everyone else, looking at those logs your cats are toast, I wouldn't waste money on sensors.

 

[Thats550]

These cats are notoriously fragile, you almost certainly damaged them with 2 step sorry to say. I damaged mine with burbles. My driver side was totally toast and my passenger side was barely hanging on.

What likely happened is that the substrates cracked and gasses are passing by the catalyst. I'm with everyone else, looking at those logs your cats are toast, I wouldn't waste money on sensors.

Okay well thank you for helping me diagnose. I'm gunna hopefully go with long tube headers and maybe mbrp or corsa muffles but I'll need to get a tune if I do headers correct? Would I be able to drive 150 miles this weekend or will I need to get it fixed first will it cause more damage. I'm gunna order everything these next few days but won't be able to get it all by this weekend

 

[K4fxd]

As long as the cats are not plugged up you should be ok

 

[junits15]

Okay well thank you for helping me diagnose. I'm gunna hopefully go with long tube headers and maybe mbrp or corsa muffles but I'll need to get a tune if I do headers correct? Would I be able to drive 150 miles this weekend or will I need to get it fixed first will it cause more damage. I'm gunna order everything these next few days but won't be able to get it all by this weekend

I did the same thing, headers were cheaper than OEM replacements so I went with that. I did Kooks.

You don't need a tune right away, it will throw P0420/P0430 but nothing bad will happen. You can drive on it as is it will be fine. I had to drive on mine for over a month before I could get the headers done.

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