B11D9
2 owner reports and 5 manufacturer filings across 2 model years from Ford.
Where B11D9 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports | Parts |
|---|---|---|---|---|
| 2020 Ford Explorer | Electrical System | 3 | 2 | Battery → |
| 2024 Ford F-150 | Not specified | 2 | — |
A model year appears here because the code is named in its record, not because every one of these vehicles sets it. Counts are mentions in the federal files, not failure rates — nobody publishes the denominator.
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What it gets filed under
What owners said
Source: NHTSA complaint databaseOwners’ own words, one per nameplate, scrubbed of anything identifying. These are unverified reports filed with NHTSA — they are what was said, not a finding that it was true.
Test drove vehicle ano battery light returned with b11d9:09 in BCM and P06EF in PCM
5 manufacturer filings name B11D9. Start with what the maker wrote down.
A code names the test that failed, not the part. A bulletin that names it is often a diagnosis someone has already written down — quote its number at the service desk.
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names B11D9.
- TSB 25-2142 Service bulletin2025-05-01 · Unknown Or Other
- This article supersedes TSB 24-2442 to update the service procedure Some 2021-2024 F-150 vehicels equipped with a 3.5L PowerBoost engine, may exhibit at least one of the following conditions: * "12V Battery State of Charge Low" message displayed in the instrument panel cluster (IPC) * "Charging System Service Soon" message displayed in the IPC * "Remote Features Disabled To Preserve Battery" in Fo
- TSB 24-2295 Service bulletin2024-09-17 · Unknown Or Other
- Some 2021-2024 F-150 vehicles equipped with a 3.5L PowerBoost engine, may exhibit a "12V Battery State of Charge Low" or "Charging System Service Soon" Message displayed in the IPC and/or "Remote Features Disabled To Preserve Battery" in FordPass. Some vehicles may also exhibit DTC B11D9:09 and a Sync Screen message of "System Off To Save Battery".
- SSM 51650 Service bulletin2023-05-22 · Electrical System
- 2020-2023 Explorer/Aviator/Police Interceptor Utility Hybrid vehicles may exhibit a charging system warning in the message center and/or illuminated battery lamp with DTC B11D9 present in the body control module (BCM). Refer to Workshop Manual (WSM), Section 414-01, Pinpoint Test C for diagnosis and repair. If the 125 amp fuse on the 14300 wire harness at the auxiliary battery is open, do not repl
- SSM 50800 Service bulletin2022-05-23 · Electrical System
- Some 2020-2022 Aviator/Explorer Hybrid vehicles may experience a low battery warning message displayed in the message center with diagnostic trouble code B11D9 present in the body control module (BCM). Refer to Workshop Manual, Section 414-01, Pinpoint Test C for diagnosis and repair. If the 125 amp fuse on the 14300 wire harness at the auxiliary battery is open, it is not necessary to replace a c
What B11D9 means
Source: SAE J2012 / OBD-IIB11D9 is a manufacturer-specific code: the second character is a 1, which under the OBD-II standard hands the definition to whoever built the vehicle. The same code can mean one thing on a Ford and something unrelated on a Hyundai. Any site that prints a single definition for it is guessing.
A stored code names the test that failed, never the part that caused it. It is the starting point of a diagnosis, not its conclusion — the same code has several possible causes and the cheap one is not always right.
Common questions about B11D9
Source: NHTSA files and the OBD-II standardWhy does this page not define B11D9?
Because it cannot be defined honestly. The second character of a trouble code says who owns its meaning, and a 1 or a 3 hands that to the manufacturer. Sites that print one definition for a manufacturer-specific code are showing you one automaker's meaning and hoping it is yours.
Can I keep driving with B11D9 stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light means a fault was logged and the car should be checked soon; a flashing light means a severe misfire — slow down and get it seen as soon as possible, because severe misfire can quickly damage the catalytic converter. The safe read of this page is the mileage and the components, not permission.
Does a code mean the car is recalled?
No. Recalls are filed by campaign and matched by VIN, and none of them are triggered by a scan tool. If you want to know whether an open recall applies to one specific vehicle, check the VIN at nhtsa.gov/recalls — that is the only source that settles it.
Why do the counts here differ from other sites?
Because these are not estimates. Every number on this page is a count of documents in NHTSA's own files: manufacturer communications that name the code in their filed summary, and owner complaints that name it in the narrative. We do not model, weight or extrapolate them.
Will clearing the code fix it?
Clearing turns the light off and erases the freeze-frame data a technician would have used to work out what happened. If the condition is still there the code returns, usually within a few drive cycles, and the diagnosis now starts from less information than before.