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Not at this point. Delete them and let's see if they come back. Did you get any DIC messages that caused you to look or was this the first time you looked?
1st of all---all "H" codes mean they are history codes OR old codes----Yours are both old codes
P1571 is for the traction control system
Simply driving over railroad tracks or on a rough road will trigger this code It's usually a false code
As mentioned just clear it and most likely it will not come back
P1626 is for the fuel shut off on your theft system Again quite often a false code--A dead battery or a battery with low voltage can trigger this code---Same thing --clear it and most likely it will not appear again
If either one appears again then report back