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B129F on the 2016 Volvo XC90

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 B129F
TJ34241.2.3-20212021-03-15. Service bulletin. This is a Technical Journal: 12V battery message and DTC CEM-B129F96
TJ34241.2.2-20202020-11-23. Service bulletin. This is a Technical Journal: 12V battery message and DTC CEM-B129F96
TJ34241.2.1-20202020-09-14. Service bulletin. This is a Technical Journal: 12V battery message and DTC CEM-B129F96
TJ3424120-2019-02019-07-01. Service bulletin. This is a Technical Journal: 12V battery message and DTC CEM-B129F96
TJ34241.1.2-20182019-03-25. Service bulletin. This is a Technical Journal: 12V battery message and DTC CEM-B129F96
TJ31708102018-01-22. Service bulletin. This document is a Technical Journal: Battery Control Switch module BCSM. Component failure. Internal fault": This DTC is most likely set due to that at one or more occasions the main battery terminal(s) has been disconnected/reconnected and a voltage spike has triggered the code. If Central Electronic Module (CEM) DTC - B129F96 is permanently set, follow the instructions in this TJ and in VIDA

6 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.