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Checking basic voltage > < Evaluation of display group 032

A3 Mk1

Evaluation of display group 033
   
Evaluation of display group 033
Display zone 2Possible cause of troubleRemedy
More than 4.800 V
t  Short to positive in wiring between Lambda probe and control unit
t  Lambda probe defective
–  Check the wiring of the Lambda probe upstream of the catalytic converter → Chapter
Less than 0.130 V
t  Short to earth in wiring between Lambda probe and control unit
t  Lambda probe defective
–  Renew Lambda probe before catalytic converter

   

Checking basic voltage > < Evaluation of display group 032