P0301 on the 2001 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.
| 0402 | 2004-06-03. Service bulletin. MALFUNCTION INDICATOR LIGHT (MIL) ON WITH DIAGNOSTIC TROUBLE CODE P0300, P0301, P0302, P0303, OR P0304 STORED. IGNITION COIL OVERLAY HARNESS, INSTALLING. *TT |
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| 0401 | 2004-05-22. Service bulletin. IGNITION COIL OVERLAY HARNESS, INSTALLING. MALFUNCTION INDICATOR LIGHT (MIL) ON WITH DIAGNOSTIC TROUBLE CODES (DTCS) P0300, P0301, P0302, P0303, OR P0304 STORED. *TT |
2 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.