fuel AUDI A6 2000 C5 / 2.G ATQ Engine Oxygen Sensor Control Checking

AUDI A6 2000 C5 / 2.G ATQ Engine Oxygen Sensor Control Checking A6 2000 C5 / 2.G AUDI AUDI https://www.carmanualsonline.info/img/6/1067/w960_1067-0.png AUDI A6 2000 C5 / 2.G ATQ Engine Oxygen Sensor Control Checking

Page 11 of 63

AUDI A6 2000 C5 / 2.G ATQ Engine Oxygen Sensor Control Checking 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

Page 13 of 63

AUDI A6 2000 C5 / 2.G ATQ Engine Oxygen Sensor Control Checking 24-87
 Evaluation display group 032  Display field: 
1 / 3 or 2 / 4  
Possible cause  
Corrective action  
Oxygen sensor 
adaptation value in 
range: 
-10.0 to .-25.0 %   
Oil thinning- Oil change or

Page 14 of 63

AUDI A6 2000 C5 / 2.G ATQ Engine Oxygen Sensor Control Checking 24-88
 Evaluation display group 032  Display field: 
1 / 3 or 2 / 4  
Possible cause  
Corrective action  
Oxygen sensor 
adaptation value in range: 
10.0 to 25.0 %   
False air in intake area- Check

Page 56 of 63

AUDI A6 2000 C5 / 2.G ATQ Engine Oxygen Sensor Control Checking 24-121
      
Checking voltage supply for oxygen sensor 
heating  
     
Test requirement:  
     
Fuse for oxygen sensor heating OK 
     
       Electrical Wiring Diagrams, Troubleshooting & 
Compon

Page 59 of 63

AUDI A6 2000 C5 / 2.G ATQ Engine Oxygen Sensor Control Checking 24-123
       If there is no voltage again:  
     
-  Check wire connection from terminal 1 to Fuel 
Pump (FP) relay via fuse for open circuit. 
     
       Electrical Wiring Diagrams, Troubleshooti