MIL on. DTC P0491 and P0492 (Secondary Air System Insufficient Flow, Bank 1/2) are stored at the same time.
Audi technical service bulletin 26 12 15 2026528 for 2010-2011 Audi A4, 2009-2011 Audi A6 and 2009-2011 Audi Q5.
- Bulletin number
- 26 12 15 2026528
- Component
- Visibility: defroster/defogger/HVAC system: air handler/chamber, ducts, and valves
- Summary
- MIL on. DTC P0491 and P0492 (Secondary Air System Insufficient Flow, Bank 1/2) are stored at the same time.
Owners of these vehicles have filed 7 complaints in the visibility category.
Vehicles covered
VIN decoder
See the problems and recalls for an exact car
Buying a used Audi A4?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history