Service & Repair Manual

24-106
Display fields
1 2 3 4
Display group 037: Diagnostic, oxygen sensor control system (bank 1)
Display
xxx % x.xxx volts
xxx ms ---
Indicated
Engine
load
Oxygen sensor voltage
behind catalytic
converter, bank 1
Oxygen sensor correction
value between oxygen sensor
1 and oxygen sensor 2, bank 1
Diagnostic condition
Functional
range
12.0 to
100.0 %
0.100 to 1.000 V
-800 to 800 ms Test OFF
Test ON
System OK
System not OK
Specified
value
12.0 to
26.0 %
0.100 to 1.000 V
-800 to 800 ms
System OK
Notes
If specified value is not
obtained: Evaluation
display field 2
Page 24-109
If specified value is not
obtained Page 24-110
If "System not OK" is displayed:
Check Diagnostic Trouble Code
(DTC) memory Page 01-15
or continuation Page 24-110
Note for display field 3:
The oxygen sensor control behind catalytic converter overrules the oxygen sensor control before catalytic converter. It
corrects slight changes in the mixture (i.e. toward rich or lean) due to the oxygen sensor before catalytic converter by holding
oxygen sensor control before catalytic converter at its higher or lower point for a specific time (dwell time). If this time is in the
positive range (i.e. 50 ms), mixture is shifted in the -enrich- direction. If this time is in the negative range (i.e. -50 ms), mixture
Pa
g
e 37 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