P0446 on the 1998 Ford Expedition
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.
| 985103 | 2000-06-20. Service bulletin. VEHIUCLES WITH 4.0L OHV/SOHC, 5.0L, 4.6L, 5.4L MAY EXHIBIT A MALFUNCTION INDICATOR LAMP ON WITH EVAP SYSTEM DIAGNOSTIC TROUBLE CODES P1450, P0455, P0446. *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.