P0446 on the 2001 Porsche 911
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.
| 403 | 2003-10-22. Service bulletin. ON-BOARD DIAGNOSIS II (OBD II)/DME ME 7.2 MANUAL SUPPLEMENT - DIAGNOSTIC TROUBLE CODES P0446/P0604/P0605/P1671. *TT |
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1 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.