Audi A6 2009–2012 — technical service bulletin
Bulletin 01134520314584 · NHTSA communication 10225019 · issued Dec 5, 2013
Technical service bulletin
communication type
Engine and Engine Cooling
component
2009–2012
model years
12
vehicle entries
Official summary
Under extreme driving conditions (such short-distance, stop-and-go driving), high crankcase pressure can cause the DTCs to appear.
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.