P0229 on the 2021 Buick Envision
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.
| 22-NA-079 | 2023-05-04. Service bulletin. This technical bulletin provides a procedure to install the cover for conditions of Poor Engine Performance in Extremely Cold Weather Conditions for LSY Engines, Charge Air Cooler Icing, Malfunction Indicator Lamp (MIL) Illuminated with a P0229. |
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| 22-NA-079 | 2022-04-22. Service bulletin. This technical bulletin provides a procedure to install the cover for conditions of Poor Engine Performance in Extremely Cold Weather Conditions for LSY Engines, Charge Air Cooler Icing, Malfunction Indicator Lamp (MIL) Illuminated with a P0229. |
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.