What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer communications
2Original wording in English
FORD
Reported code forms B1D09
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…
FORD
Reported code forms B1D09:11
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…
Check vehicle applicability
2A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.