Check Engine Light After Switching Downpipe

[zkeepitlowkey]

Hey everybody, about a couple months ago I switched over to a catless downpipe on my 2021 Supra. After driving with the catless DP for about 100 miles the check engine light turned on (as expected) I put over 1000 miles with the check engine light on after finally converting back to the stock DP today.

After reinstalling the stock downpipe, I drove 30 miles back home and the check engine light is still on. Is there any tips as to how I can get the light to turn off, or should I try driving it some more?

thanks!

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[Sub-MkV]

Did you reset the light with a CEL scanner? You might have to drive cycle it out and see if it comes off if you can't reset it

 

[zrk]

Did you clear the code and it came back?

If so, maybe the second O2 sensor isn’t seated or connected properly?

If you didn’t clear the code, clear the code

 

[Tsuekasa]

I would have cleared the code after installing the stock pipe. If it came on after driving it with the stock dpipe then I would check to see if things were installed correctly and clear again. Just clear the code with either a obd2 bimmerlink adapter.

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