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B390A on the 2020 Cadillac Escalade

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.

This code is specific to a manufacturer and is not described here. Its meaning is in the manufacturer's service information.

Bulletins for this model year that name B390A
19NA0712020-08-10. Service bulletin. This technical bulletin provides repair information to correct a customer concern of forward collision/active safety system inoperative, no messages or alerts. Technician may find DTC?s B390A?45, B390A?58 and/or DTC?B390A?67 are set.
19NA0712020-06-22. Service bulletin. This technical bulletin provides repair information to correct a customer concern of forward collision/active safety system inoperative, no messages or alerts. Technician may find DTC?s B390A?45, B390A?58 and/or DTC?B390A?67 are set.

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.