P0446 on the 2017 Buick Encore
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.
| 17NA383 | 2018-06-11. Service bulletin. This technical bulletin provides a procedure to replace the evap canister for vehicles with the condition of Malfunction Indicator Lamp (MIL) Illuminated with DTC P0446 or P0455 Set due to spiders laying a nest within the canister. |
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| PIC6250B | 2017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have a check engine light. Technician will find Diagnostic Trouble Code P0446. Technician will need to replace the Evaporative Emissions System canister if spider nesting in the fresh air inlet port. |
| PIC6250A | 2017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have a check engine light. Technician will find Diagnostic Trouble Code P0446. Technician will need to replace the Evaporative Emissions System canister if spider nesting in the fresh air inlet port. |
| PIC6250 | 2017-08-15. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that have a check engine light. Technician will find Diagnostic Trouble Code P0446. Technician will need to replace the Evaporative Emissions System canister if spider nesting in the fresh air inlet port. |
4 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.