Home >> Audi >> 2000 >> A6 Base >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Exhaust System, Emission Control, Generic Scan Tool - 2.8L V6 Aha, ATQ >> Exhaust System,Emission Control >> Secondary Air Injection (AIR) system >> Secondary Air Injection (AIR) valve, checking >> Test sequence >> Vehicles with engine code AHA