check engine AUDI A4 1999 B5 / 1.G AFC Engine Heated Oxygen Sensor After Converter Checking Workshop Manual

AUDI A4 1999 B5 / 1.G AFC Engine Heated Oxygen Sensor After Converter Checking Workshop Manual A4 1999 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/1021/w960_1021-0.png AUDI A4 1999 B5 / 1.G AFC Engine Heated Oxygen Sensor After Converter Checking Workshop Manual

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AUDI A4 1999 B5 / 1.G AFC Engine Heated Oxygen Sensor After Converter Checking Workshop Manual 24-55
      
Oxygen sensor heater, checking  
     
Notes:  
     
Z29 = Oxygen Sensor (O2S) heater, bank 1
     Z30 = Oxygen Sensor (O2S) heater, bank 2
     For functional check of O2S heater -Z29-