Audi A6 2014–2016 — technical service bulletin
Bulletin Dealer 23Z8 · NHTSA communication 10163788 · issued Aug 5, 2019
Technical service bulletin
communication type
Engine and Engine Cooling
component
2014–2016
model years
12
vehicle entries
Official summary
Audi is releasing a software calibration update to the Approved Emissions Modification (AEM) to improve on-board diagnostics (OBD) monitoring of vehicle emissions systems and provide other improvements to the software used by the vehicle. Additionally, to reduce soot accumulation affecting the oxygen sensor, it is necessary to replace and relocate the sensor, which requires replacement of the diesel oxidation catalyst (DOC) and diesel particulate filter (DPF).
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.