# P0491 on the 2011 Audi S6

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

Nobody has written a description of this code yet.

## Bulletins for this model year that name P0491

- [10122864](https://open.wenmarpro.com/bulletins/10122864), 2017-11-08: Supersedes Technical Service Bulletin Group 26 number 12\-10 dated March 30, 2012. MIL on. DTC P0491 and P0492 \(Secondary Air System Insufficient Flow, Bank 1/2\) are stored at the same time. Mileage greater than 20,000 miles.