Audi A5 2014–2015 — technical service bulletin
Bulletin A0123972072121_1 · NHTSA communication 10245610 · issued Nov 20, 2023
Technical service bulletin
communication type
Electrical System
component
2014–2015
model years
12
vehicle entries
Official summary
This bulletin provides information for when the MIL/EPC light is illuminated, DTC P042000 or P043000, Catalyst system, bank 1 or 2 efficiency below thresh hold.
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.