P0446 on the 1999 Toyota Corolla
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.
| EG00599 | 1999-08-16. Service bulletin. VEHICLES WITHIN CERTAIN VIN RANGES MAY EXHIBIT A FALSE MALFUNCTION INDICATOR LAMP ON WITH DIAGNOSTIC TROUBLE CODE P0446 SET. *TT |
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| EG00599 | 1999-08-02. Service bulletin. VEHICLES MAY EXHIBIT A FALSE MALFUNCTION INDICATOR LAMP (MIL) ON WITH DIAGNOSTIC TROUBLE CODE P0446. *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.