P1128 AUDI Long Term Fuel Trim B1 System Too Lean

Possible causes

– Faulty Mass Air Flow (MAF) sensor
– Low fuel pressure
– Vacuum leak on engine
– Faulty HO2S bank 1

Symptoms

– Engine Light ON (or Service Engine Soon Warning Light)

AUDI Related P1128 code

2000 AUDI A8 Engine And Engine Cooling:engine

2001 AUDI A6 Engine And Engine Cooling:engine

2001 AUDI A8 Engine And Engine Cooling:engine

2002 AUDI A6 Engine And Engine Cooling:engine

2002 AUDI A8 Engine And Engine Cooling:engine

2000 AUDI QUATTRO Electrical System

2001 AUDI QUATTRO Electrical System

2002 AUDI QUATTRO Electrical System

2002 AUDI A4 Engine And Engine Cooling:engine

2002 AUDI S4 Engine And Engine Cooling:engine