P0401 on the 2015 Volkswagen Jetta
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| TT 26 19 03_3 | 2021-07-02. Service bulletin. Diag and repair direction for P0401/P2002 |
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| TT 26-19-03 | 2019-12-06. Service bulletin. Diag and repair direction for P0401/P2002 |
| TT 26-19-03ss1 | 2019-12-06. Service bulletin. Diag and repair direction for P0401/P2002 |
3 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.