I "think" those are the codes that would happen if someone took the seat out/disconnected it while the battery was still connected or the steering wheel.
21 looks like it's for the steering wheel airbag, but I could be wrong.
I would clear the airbag codes and see if they come back with the durametric.
__________________
2000 Boxster Tiptronic
2003 Boxster
2003 996 C2 Cab
2002 996 (SOLD)
1986 944 (gone but missed)
|