Tech description
There is a factory service bulletin for the P3138 code for the following models:
2005-2007 Audi A3
2005-2007 Audi A4
2007 Audi A4 Cabriolet
2008 Audi TT
Audi Factory Service Bulletin OBDII Code P3138
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
AUDI Related P3138 code
2005 AUDI A3 Electrical System: Software
2005 AUDI A4 Electrical System: Software
2006 AUDI A3 Electrical System: Software
2006 AUDI A4 Electrical System: Software
2007 AUDI A3 Electrical System: Software
2007 AUDI A4 Electrical System: Software
2007 AUDI A4 CABRIOLET Electrical System: Software
2008 AUDI TT Electrical System: Software