2
Code Letters
AFC
AEB
APB
AHA
ATQ
Exhaust Gas
Recirculation (EGR) Yes No No No No
OBD with DTC Memory Yes Yes Yes Yes Yes
Exhaust emission control Three Way Catalytic Converter (TWC)
Oxygen Sensor (O2S) Control Yes Yes Yes Yes Yes
Electronic throttle control (E-Gas) No No Yes
Variable valve timing No No Yes
Pa
ge 2 of 6 En
gine overview
11/20/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.ME01.01.1
