P0420 Code

FlashPro questions & answers specific to the 2008+ Accord, Americas and international
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pconcha419
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Joined: Wed Apr 14, 2021 6:30 pm

P0420 Code

Post by pconcha419 »

how do I disable p0420 code on hondata flashpro? prl catted down pipe is giving me the CEL. Thanks
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Spunkster
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Re: P0420 Code

Post by Spunkster »

What vehicle are you referring to?
Cv26mt
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Joined: Wed Nov 24, 2021 8:23 pm

Re: P0420 Code

Post by Cv26mt »

I'm having the same issue. 2018 2.0 6mt stage 2 with flexfuel. Just installed the catted street pipe from PRL and after 100 miles the p0420 code appeared. I cannot even clear it with the hondata mobile app. Any ideas? Thanks!
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Hondata
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Re: P0420 Code

Post by Hondata »

Emissions error codes cannot be disabled in the CARB FlashPro.

I'm not sure if the downpipe you are using is emissions legal, but it should not trigger an error code if it is.

viewtopic.php?t=12518
Hondata
Cv26mt
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Joined: Wed Nov 24, 2021 8:23 pm

Re: P0420 Code

Post by Cv26mt »

Interesting, yes this is a high flow cat I thought it was emissions legal since it has a cat...but I don't know. It's from PRL.
pconcha419
Posts: 14
Joined: Wed Apr 14, 2021 6:30 pm

Re: P0420 Code

Post by pconcha419 »

did u ever figure this out? im getting the same error code on a 21 2.0 sport. Is there a way to disable it?
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