Volkswagen Passat 2012–2014 — technical service bulletin
Bulletin TT 01 20 03 · NHTSA communication 10176730 · issued Jun 19, 2020
Technical service bulletin
communication type
Engine and Engine Cooling
component
2012–2014
model years
3
vehicle entries
Official summary
Nox sensor diagnosis.
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.