AUDI A8 1997 D2 / 1.G ATQ Engine Readiness Code Owner's Manual
Manufacturer: AUDI, Model Year: 1997, Model line: A8, Model: AUDI A8 1997 D2 / 1.GPages: 47, PDF Size: 0.14 MB
Page 21 of 47

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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Page 22 of 47

-  Press buttons -0-, -3- and -5- to select "display group number 035" 
and press -Q- button to confirm input. 
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Page 23 of 47

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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Page 24 of 47

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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Page 25 of 47

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. 
Pa
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Page 26 of 47

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.
Pa
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Page 27 of 47

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:  
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Page 28 of 47

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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Page 29 of 47

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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Page 30 of 47

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
ge 30 of 47 Readiness code11/23/2002 htt
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yp
e=re
pair&id=AUDI.B5.FU05.01.7