P1137 AUDI Long Term Fuel Trim Add. Fuel B1 System Too Rich

Possible causes
– Faulty O2 Sensor
– High fuel pressure
– Faulty Mass Air Flow (MAF) Sensor
– O2 Sensor harness is open or shorted
– O2 Sensor circuit poor electrical connection
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
AUDI Technical Service Bulletins for P1137 code
1998 AUDI A4 FUEL SYSTEM, OTHER
1998 AUDI A6 FUEL SYSTEM, OTHER
1999 AUDI A4 FUEL SYSTEM, OTHER
1999 AUDI A6 FUEL SYSTEM, OTHER
2000 AUDI A4 FUEL SYSTEM, OTHER
2000 AUDI A6 FUEL SYSTEM, OTHER
2000 AUDI S4 FUEL SYSTEM, OTHER
2001 AUDI A4 FUEL SYSTEM, OTHER
2001 AUDI A6 FUEL SYSTEM, OTHER
2001 AUDI S4 FUEL SYSTEM, OTHER