good luck finding those codes. i have searched for the "non-P" fault codes before and found nothing. i heard porsche doesnt even print them out (in manuals, etc) anymore, and only has them in PIWIS. but FWIW...
...i think i might even have a few of those on my car. they have prob been there for who knows how long but i just bought a durametric so i just found them. the point? i'm not really sure what they are, but as long as everything works the way it's supposed to, i couldnt care less.
and i wouldnt worry about the over-revs. there's over 100hrs since the last range 3 and almost 500 since the last range 4 = plenty of time for an issue to rear it's ugly head if there had been engine damage. just make sure it's CPO'd.
PCA Potomac DE registrar
bilstein damp's, 500#/700# Eibach's
TPC sways, TPC drop links
OZ Ultraleggera HLT's
GT2 sport buckets
DAS roll bar
Schroth HANS Profi