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B2A16 on the 2008 Subaru Forester

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 B2A16
18-226-25R2026-01-06. Service bulletin. This Service Information Bulletin provides the Service Manual Correction to the diagnostic procedure for DTC B2A16 (Immobilizer Key Collation Diagnosis).
15-251-19R2025-07-01. Service bulletin. This Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16.
15-251-19R2025-05-02. Service bulletin. This Service Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16.
15-251-19R2025-03-04. Service bulletin. "This Service Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16."
15-251-19R2024-09-04. Service bulletin. This Bulletin provides additional diagnostics to follow when addressing a Telematics-related DTC B2A16.

5 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.