Audi A4 2021–2023 — technical service bulletin
Bulletin A2023622069834_2 · NHTSA communication 10245614 · issued Nov 17, 2023
Technical service bulletin
communication type
Equipment
component
2021–2023
model years
15
vehicle entries
Official summary
This repair authorization requests that technicians contact the Technical Assistance Center before proceeding when the MIL is illuminated, and DTC P04F000 is stored.
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.