Audi A6 2009–2012 — technical service bulletin
Bulletin 147320314585 · NHTSA communication 10216611 · issued Mar 18, 2014
Technical service bulletin
communication type
Service Brakes
component
2009–2012
model years
13
vehicle entries
Official summary
Under extreme driving conditions (such as short-distance, stop-and-go driving), high crankcase pressure can cause the DTCs to appear. The condition can be improved and the DTCs eliminated when the crankcase pressure valve is changed to a lower operating pressure and the ECM software is updated to compensate for new crankcase pressure.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.