Audi A4 2009–2011 — technical service bulletin
Bulletin A26162720439811 · NHTSA communication 10093601 · issued Apr 14, 2016
Technical service bulletin
communication type
Engine and Engine Cooling
component
2009–2011
model years
10
vehicle entries
Official summary
This bulletin informs the reader to receive diagnosis or authorization from the technical assistance center before repairing an issue with the catalytic converter that causes dtc p042000
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.