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Service bulletins for the 2021 Ford Bronco

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

322 on file from NHTSA, as of 2026-10-19.

About B11DB on the 2021 Ford Bronco: what the code means, and the bulletins and recalls about the same components.

By type

By component

By trouble code

Only bulletins with trouble code: B11DB are shown. Show all

Bulletins, newest first
SSM 546292026-03-11. Service bulletin. ELECTRICAL SYSTEM; POWER TRAIN. Some 2021-2023 Bronco vehicles may exhibit a charging system lamp that illuminates intermittently, and/or diagnostic trouble code (DTC) B11DB:08 in the body control module (BCM). This may be due to a loose fuse terminal for the low voltage high current fuse (3A). If this condition is present, compare fuse removal effort between the low voltage high current fuse and like fuses in the battery junction box (BCMC). If removal effort for the fuse is low, replace the low voltage high current fuse panel assembly to correct this condition. Refer to Workshop Manual (WSM) Section 414-01 > Removal and Installation > Low Voltage High Current Fuse. For claiming, use causal part 14526 and labor time MT14526SSM with a limit of 0.5 hours.
TSB 23-23682023-12-05. Service bulletin. ELECTRICAL SYSTEM. This article supersedes TSB 23-2196 to update the Service Procedure. Some 2021-2022 Bronco vehicles equipped with a 2.7L or 3.0L EcoBoost engine may exhibit various charging system error messages and/or illuminated charging system indicator displayed in the instrument panel cluster (IPC) with diagnostics trouble code (DTC) B11DB set within the body control module (BCM). This may be due to coolant contamination into the battery monitor sensor (BMS) and/or in line connector from a leaking transmission fluid heater coolant control valve. To correct the condition, follow the Service Procedure to clean the BMS connector and replace the transmission fluid heater coolant control valve.
SSM 519892023-11-03. Service bulletin. ELECTRICAL SYSTEM. Some 2021-2023 Bronco vehicles may exhibit a charging system lamp that illuminates briefly and/or intermittently, and/or diagnostic trouble code (DTC) B11DB:08 in the body control module (BCM). This may be due to a loose fuse terminal for the 3 amp fuse in the battery positive fuse assembly. If this condition is present, compare fuse removal effort between the 3A fuse in the battery positive fuse assembly and like fuses in the under hood fuse box. If removal effort for the 3A fuse is low, replace the battery positive fuse assembly to correct this condition. Refer to Workshop Manual (WSM) Section 404-01 > Removal and Installation > Low Voltage High Current Fuse. For claiming, use causal part 14526 and M-time.
TSB 23-21962023-06-29. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. This article supersedes TSB 23-2135 to update the Part List. Some 2021-2022 Bronco vehicles equipped with a 2.7L or 3.0L EcoBoost engine may exhibit various charging system error messages and/or illuminated charging system indicator displayed in the instrument panel cluster (IPC) with diagnostics trouble code (DTC) B11DB set within the body control module (BCM). This may be due to coolant contamination into the battery monitor sensor (BMS) from a leaking transmission fluid heater coolant control valve. To correct the condition, follow the Service Procedure to clean the BMS connector and replace the transmission fluid heater coolant control valve.
TSB 23-21352023-05-24. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:BODY CONTROL MODULE/BCM. Some 2021-2022 Bronco vehicles equipped with a 2.7L or 3.0L EcoBoost engine may exhibit various charging system error messages and/or illuminated charging system indicator displayed in the instrument panel cluster (IPC) with diagnostics trouble code (DTC) B11DB set within the body control module (BCM). This may be due to coolant contamination into the battery monitor sensor (BMS) from a leaking transmission fluid heater coolant control valve. To correct the condition, follow the Service Procedure to clean the BMS connector and replace the transmission fluid heater coolant control valve.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.