AUDI A8 2000 D2 / 1.G ATQ Engine Readiness Code Owner's Manual

01-92


Display fields

1 2 3 4
Display group 034: Oxygen sensor aging diagnostic, oxygen sensor before catalytic converter (bank 1)
Display xxxx/min
xxx C
x.x s
---
Indicated Engine speed
(RPM) Exhaust
temperature Period duration
Oxygen sensor
before
Catalytic
converter Diagnostic condition
Functional
range 630 to 6800
RPM 70 to 850 C
0 to 3.0 s Test OFF
Test ON
B1-S2 OK
B1-S2 not OK
Specified
value 2200 RPM
above 380 C 0.1 to 1.8 s B1-S2 OK
Notes



If "B1-S1 not OK" is displayed: Check Diagnostic
Trouble Code (DTC) memory Page 01
-15

If specified value "B1-S1 OK" is obtained:

- Press -C- button.Basic Setting
Q
Input display group number XXX

When indicated on display:
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- Press buttons -0-, -3- and -5- to select "display group number 035"
and press -Q- button to confirm input.
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01-93
If specified value "B2-S1 OK" is obtained:
System in Basic Setting 35
1
2
3
4

When indicated on display:
- Check specified value in display field 4.

Display fields

1 2 3 4
Display group 035: Oxygen sensor aging diagnostic, oxygen sensor before catalytic converter (bank 2)
Display xxxx/min
xxx C
x.x s
---
Indicated Engine speed
(RPM) Exhaust
temperature Period duration
Oxygen sensor
before
Catalytic
converter Diagnostic condition
Functional
range 630 to 6800
RPM 70 to 850 C
0 to 3.0 s Test OFF
Test ON
B2-S2 OK
B2-S2 not OK
Specified
value 2200 RPM
above 380 C 0.1 to 1.8 s B2-S2 OK
Notes



If "B2-S1 not OK" is displayed: Check Diagnostic
Trouble Code (DTC) memory Page 01
-15

- Press -C- button.
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01-94

Work step 7: Diagnostic of operational
readiness of oxygen sensors behind catalytic
converter

Test requirement

Engine continues to run at 2200 RPM.
Basic Setting
Q
Input displa
y group number XXX

When indicated on display:
- Press buttons -0-, -3- and -6- to select "display group number 036" and
press -Q- button to confirm input.
System in Basic Setting 36
1
2
3
4

When indicated on display:
- Check specified values in display fields 2 and 4.
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01-95


Display fields

1 2 3 4
Display group 036: Operational readiness of the oxygen sensor behind catalytic converter (bank 1 and bank 2)
Display x.xxx V
--- x.xxx V
---
Indicated Voltage of oxygen
sensors behind
catalytic converter,
bank 1 Diagnostic condition Voltage of oxygen
sensors behind
catalytic converter,
bank 2 Diagnostic condition
Functional
range 0.100 to 1.000 V
Test OFF
Test ON
B1-S2 OK
B1-S2 not OK 0.100 to 1.000 V
Test OFF
Test ON
B2-S2 OK
B2-S2 not OK
Specified
value smaller than 0.4 V
or
larger than 0.5 V B1-S2 OK smaller than 0.4 V
or
larger than 0.5 V B2-S2 OK
Notes

If "B1-S2 not OK" is
displayed: Check Diagnostic
Trouble Code (DTC) memory
Page 01
-15


If "B2-S2 not OK" is
displayed: Check Diagnostic
Trouble Code (DTC) memory
Page 01
-15

If specified value "B1-S1 OK" is obtained:

- Press -C- button.
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01-96

Work step 8: Diagnostic of oxygen sensor
control system

Test requirement

Engine continues to run at 2200 RPM.
Basic Settin
g
Q
Input display group number XXX

When indicated on display:
- Press buttons -0-, -3- and -7- to select "display group number 037" and
press -Q- button to confirm input.
System in Basic Setting 37
1
2
3
4

When indicated on display:
- Check specified value in display field 4.
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01-97


Display fields

1 2 3 4
Display group 037: Diagnostic of oxygen sensor control system (Bank 1)
Display xxx % x.xxx volts xxx ms
---
Indicated Load Voltage of oxygen sensors
behind catalytic converter,
bank 1 Oxygen sensor
correction value
between sensor 1
and sensor 2 (bank
1) Diagnostic condition
Functional
range 12 to
100 % 0.100 to 1.000 V -800 to 800 ms
Test OFF
Test ON
System OK
System not OK
Specified
value 12 to 26
% 0.100 to 1.000 V -800 to 800 ms System OK
Notes



If "System not OK" is displayed: Check
Diagnostic Trouble Code (DTC) memory
Page 01
-15

If specified value "Syst. OK" is obtained:

- Press -C- button. Basic Settin
g
Q

When indicated on display:
Pa
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Input displa
y group number XXX
- Press buttons -0-, -3- and -8- to select "display group number 038"
and press -Q- button to confirm input.
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01-98
If specified value "Syst. OK" is obtained:
System in Basic Setting 34
1
2
3
4

When indicated on display:
- Check specified value in display field 4.

Display fields

1 2 3 4
Display group 038: Diagnostic of oxygen sensor control system (Bank 2)
Display xxx % x.xxx volts xxx ms
---
Indicated Load Voltage of oxygen sensors
behind catalytic converter,
bank 2 Oxygen sensor
correction value
between sensor 2
and sensor 2 (bank
1) Diagnostic condition
Functional
range 12 to
100 % 0.100 to 1.000 V -800 to 800 ms
Test OFF
Test ON
System OK
System not OK
Specified
value 12 to 26
% 0.100 to 1.000 V -800 to 800 ms System OK
Notes



If "System not OK" is displayed: Check
Diagnostic Trouble Code (DTC) memory
Page 01
-15

- Press -C- button.
Pa
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01-99

Work step 9: Diagnostic of oxygen sensor
aging behind catalytic converter

Test requirement

Engine continues to run at 2200 RPM.
Basic Settin
g
Q
Input display group number XXX

When indicated on display:
- Press buttons -0-, -4- and -3- to select "display group number 043" and
press -Q- button to confirm input.
System in Basic Setting 43
1
2
3
4

When indicated on display:
- Check specified value in display field 4.
Pa
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e=re
pair&id=AUDI.B5.FU05.01.7