air condition AUDI A6 1999 C5 / 2.G ATQ Engine Readiness Code User Guide

01-100


Display fields

1 2 3 4
Display group 043: Oxygen sensor aging diagnostic, oxygen sensor behind catalytic converter (bank 1)
Display xxxx/min
xxx C
x.x s
---
Indicated Engine speed
(RPM) Exhaust
temperature Voltage of oxygen sensors
behind catalytic converter,
bank 1 Diagnostic condition
Functional
range 630 to 6800
RPM 70 to 850 C
0.100 to 1.000 V Test OFF
Test ON
B1-S2 OK
B1-S2 not OK
Specified
value 2200 RPM
above 380 C 0.100 to 1.000 V B1-S2 OK
Notes



If "B1-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. Basic Settin
g
Q
Input displa
y group number XXX

When indicated on display:
-
Press buttons -0-, -4- and -4- to select "display group number 044"
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01-101
If specified value B2-S2 OK" is obtained:
System in Basic Setting 44
1
2
3
4

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

Display fields

1 2 3 4
Display group 044: Oxygen sensor aging diagnostic, oxygen sensor behind catalytic converter (bank 2)
Display xxxx/min
xxx C
x.x s
---
Indicated Engine speed
(RPM) Exhaust
temperature Voltage of oxygen sensors
behind catalytic converter,
bank 2 Diagnostic condition
Functional
range 630 to 6800
RPM 70 to 850 C
0.100 to 1.000 V Test OFF
Test ON
B2-S2 OK
B2-S2 not OK
Specified
value 2200 RPM
above 380 C 0.100 to 1.000 V B2-S2 OK
Notes



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

- Press -C- button.
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01-103


Display fields

1 2 3 4
Display group 046: Diagnostic of catalytic converter (bank 1)
Display xxxx/min
xxx C
x.x s
---
Indicated Engine
speed
(RPM) Exhaust
temperature Catalytic
converter -
conversion Diagnostic condition
Functional
range 630 to 6800
RPM 70 to 850 C
0.00 to 0.99 Test OFF
Test ON
Cat B1 OK
Cat B1 not OK
Specified
value 2200 RPM
above 420 C 0.00 to 0.52

1)

0.00 to 0.47

2)
Cat B1 OK
Notes



If "Cat B1 not OK" is displayed: Check Diagnostic
Trouble Code (DTC) memory Page 01
-15
. If no DTCs
are stored, replace catalytic converter.
1) Manual transmission 2) Automatic transmission
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01-105


Display fields

1 2 3 4
Display group 047: Diagnostic of catalytic converter (bank 2)
Display xxxx/min
xxx C
x.x s
---
Indicated Engine
speed
(RPM) Exhaust
temperature Catalytic
converter -
conversion Diagnostic condition
Functional
range 630 to 6800
RPM 70 to 850 C
0.00 to 0.99 Test OFF
Test ON
Cat B2 OK
Cat B2 not OK
Specified
value 2200 RPM
above 420 C 0.00 to 0.52

1)

0.00 to 0.47

2)
Cat B2 OK
Notes



If "Cat B2 not OK" is displayed: Check Diagnostic
Trouble Code (DTC) memory Page 01
-15
. If no DTCs
are stored, replace catalytic converter.
1) Manual transmission 2) Automatic transmission
Pa
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01-107


Display fields

1 2 3 4
Display group 070: Diagnostic of tank ventilation valve
Display xx % xx.x % g/s
---
Indicated Degree tank
ventilation valve is
opened Oxygen
sensor
control
deviation Deviation
of
Idle
control Diagnostic condition
Functional
range 0 to 99 % -25.0 to 25.0
%
Test OFF
Test ON
TVV OK
TVV not OK
Aborted
Specified
value 0 to 99 % -7.0 to 7.0
% x.xx g/s
1) TVV OK
Notes


If "TVV not OK" is displayed: Check Diagnostic Trouble
Code (DTC) memory Page 01
-15
. Check Evaporative
Emission (EVAP) canister purge regulator valve -N80-
Page 24
-128

1) An indication is only displayed if diagnostic result falls within a specified range due to deviation of idle control and not due to
deviation of an oxygen sensor (e.g. sensor 1 from EVAP canister). Otherwise, display field 3 remains empty.
If specified value "TVV OK" is obtained:
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01-109

- Check specified value in display field 4 after
indication "Test ON" appears:

Display fields

1 2 3 4
Display group 071: Diagnostic of tank seal
Display --- --- ---
---
Indicated Condition Reed-
Terminal DTC
message System
condition Diagnostic condition
Functional
range Reed open
Reed closed Small leak
Large leak
System not
OK
Aborted System test
Measurement
END
Measurement Test OFF
Test ON
System OK
System not OK
Aborted
Specified
value Reed open --- END
Measurement 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.
Pa
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01-111


Display fields

1 2 3 4
Display group 077: Secondary Air Injection (AIR) system diagnostic
Display xxxx/min xx.x
g/s %
---
Indicated Engine speed
(RPM) Air
mass Relative air
mass
Secondary air
system Diagnostic condition
Functional
range 670 to 6800
RPM
Test OFF
Test ON
System OK
System not OK
Specified
value 720 to 820
RPM
1)
630 to 730
RPM 2) 0 to 5 -80 to 20 System OK
Notes


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

1) Front Wheel Drive Vehicles 2) All-Wheel Drive Vehicles
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