Service & Repair Manual

24-85
Evaluation display group 033
Display field: 1 / 3 Possible cause Corrective action
Values in range:
-10.0 to -25.0 %
Oxygen sensor heating faulty
- Check oxygen sensor heating Page
24-116
or
Values in range:
Open circuit in wires between oxygen sensor
and control module
- Check primary voltage Page 24-89
10.0 to 25.0 %
or
Value does not fluctuate
by at least 2 %
Short circuit to Ground (GND) or B+ between
oxygen sensor and control module
- Check oxygen sensor wires bank 1
Page 24-90
- Check oxygen sensor wires bank 2
Page 24-91
False air in intake area
- Check intake system for leaks and
repair false air Page 24-64
Fuel pressure too low or too high
- Check fuel pressure regulator Page
24-30
Fuel return line is kinked or clogged
- Check fuel return line.
Pa
g
e 11 of 63Ox
yg
en sensor control, checkin
g
11/23/2002htt
p
://127.0.0.1:8080/audi/servlet/Dis
p
la
y
?action=Goto&t
yp
e=re
p
air&id=AUDI.B5.FU05.24.3