P0456 on the 2006 Volkswagen Passat
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.
| 200709 | 2007-08-15. Service bulletin. MIL ON, DTC'S P0442, P0445, P0456 OR P2404 STORED IN ECM FAULT MEMORY, NO LEAKS PRESENT. *KB |
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| 0602 | 2006-03-17. Service bulletin. MIL ON, DTCS P0442, OR P0456 STORED (OA). *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.