B1D08
0 owner reports and 31 manufacturer filings across 10 model years from Ford.
Where B1D08 shows up
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2022 Ford F-250 Super Duty | Exterior Lighting | 4 | — |
| 2022 Ford F-350 Super Duty | Exterior Lighting | 4 | — |
| 2022 Ford F-450 Super Duty | Electrical System | 4 | — |
| 2024 Ford F-250 Super Duty | Service Brakes | 3 | — |
| 2023 Ford F-250 Super Duty | Service Brakes | 3 | — |
| 2024 Ford F-350 Super Duty | Service Brakes | 3 | — |
| 2023 Ford F-350 Super Duty | Service Brakes | 3 | — |
| 2024 Ford F-450 Super Duty | Service Brakes | 3 | — |
| 2023 Ford F-450 Super Duty | Service Brakes | 3 | — |
| 2022 Ford Maverick | Electrical System | 1 | — |
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.
What it gets filed under
Manufacturer filings that name it
Source: NHTSA manufacturer communicationsService bulletins and campaigns whose filed summary names B1D08. Quoting the document number at a service desk is often the fastest route to a diagnosis someone has already written down.
- SSM 533662025-02-07 · Unknown Or Other
- Some 2022 F-Super Duty vehicles equipped with a 12.3 inch center display screen and 2023-2024 F-Super Duty vehicles may exhibit DTCs B1D08 and/or B1D09 stored in the trailer module (TRM) with a "Trailer Brake System Fault See Manual" message in the instrument panel cluster (IPC) when a trailer is not connected to the vehicle.
- SSM 524672024-04-23 · Trailer Hitches
- Some 2022 F-Super Duty vehicles equipped with a 12.3 inch center display screen and 2023-2024 F-Super Duty vehicles may exhibit DTCs B1D08 and/or B1D09 stored in the trailer module (TRM) with a Trailer Brake System Fault See Manual message in the instrument panel cluster (IPC) when a trailer is not connected to the vehicle. This may be due to water intrusion at the back side of the trailer tow con
- SSM 523082024-02-29 · Service Brakes
- Some 2022 F-Super Duty vehicles equipped with a 12.3 inch center display screen and 2023-2024 F-Super Duty vehicles may exhibit DTCs B1D08:11 and/or B1D09:11 stored in the trailer module (TRM) with a Trailer Brake System Fault See Manual message in the instrument panel cluster (IPC) when a trailer is not connected to the vehicle. This may be due to water intrusion at the back side of the trailer t
- TSB 22-22202022-06-08 · Electrical System — Integrated Trailer Brake Control
- Some 2022 Maverick vehicles built on or before 18-Mar-2022 equipped with a trailer brake controller and a 8 inch center display screen may exhibit a trailer brake module fault message, trailer lighting module fault message, and/or trailer right turn lamps fault/trailer left turn lamps fault message, diagnostic trouble codes (DTC) B1D08 and/or B1D09 stored in the integrated trailer module (TRM) and
- TSB 22-20982022-03-18 · Exterior Lighting — Turn Signal
- Some 2022 F-Super Duty vehicles equipped with a trailer brake controller and a 12.3 inch center display screen, built on or before 16-Feb-2022, may exhibit a trailer brake module fault message, trailer lighting module fault message and/or trailer right turn lamps fault/trailer left turn lamps fault message, diagnostic trouble codes (DTC) B1D08 and/or B1D09 stored in the integrated trailer module (
What B1D08 means
Source: SAE J2012 / OBD-IIB1D08 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 B1D08
Source: NHTSA files and the OBD-II standardWhy does this page not define B1D08?
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 B1D08 stored?
Nobody can answer that from the code alone, and a site that does is guessing. A steady light generally means the fault was logged and the vehicle is in a reduced-risk mode; a flashing light means stop soon, because a misfiring engine can destroy a catalytic converter in minutes. 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.