Possible CBU Code?

So I'm on lap 1 of run 6 at my HPDE, and my SES light comes on. I hit the pits and run Carly on the car, shows nothing engine related. So I clear code and continue driving. Next start up, I have a rough idle with NO SES code. Run Carly again and get 004B82...Fault: Exhaust gas recirculation rate control, deviation exhaust gas recirculation rate control error while Kat heating

Time to have the stealership clean some CBU?

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Possible CBU Code?