Volkswagen Jetta 2020–2021 — technical service bulletin
Bulletin V0123122072378_2 · NHTSA communication 11018931 · issued May 2, 2025
Technical service bulletin
communication type
Fuel/propulsion System
component
2020–2021
model years
2
vehicle entries
Official summary
Update Programming of Engine/Motor Control Module J623 and replacement of FTIV if necessary.
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.