Reference meaning
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.
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A 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.
Scan worksheet →Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
B1A56-15Antenna - Circuit short to battery or open (GSM antenna circuit short circuit to power, open circuit, high resistance)
B1A56-11Antenna - Circuit short to ground (GSM antenna circuit short circuit to ground)
Manufacturer communications
4Original wording in English
FORD, LINCOLN
Some 2020-2022-Corsair, 2021-2023 Nautilus, 2020-2024 Navigator/Aviator, and 2021-2024 Mustang Mach-E vehicles equipped with phone-as-a-key may exhibit various phone-as-a-key concerns with diagnostic trouble codes (DTC) U200D:15, U200E:15, U200F:15, B1589:31/49 through B1598:31/49, B1A56:31/49, B1D55:31/49, and/or B15A5:56 store…
LINCOLN
Some 2020 Navigator and 2020 Corsair vehicles may have diagnostic trouble codes (DTCs) P1269, B1A56, B1D55, B1589, and/or B1590 through B1598 stored in the RFA module with no reported customer symptoms. If these DTCs are detected during pre-delivery inspection (PDI) or while diagnosing unrelated conditions, they should be disreg…
LINCOLN
Some 2020 Corsair vehicles may exhibit diagnostic trouble codes (DTCs) P1269, B1A56, B1D55, B1589, and/or B1590 through B1598 stored in the RFA module with no detectable customer symptoms. If these DTCs are detected during pre-delivery inspection (PDI) or while diagnosing unrelated conditions, they should be ignored.
LAND ROVER
SOS Limited Functionality displayed on the Instrument Cluster (IC) and Multiple Diagnostic Trouble Codes (DTC?s) may be stored in the Telematics Control Module (TCU). All or a combination of the following DTC?s may be present in the TCU: B1A56-11 - Antenna - Circuit short to ground (GSM antenna circuit short circuit to ground) B…
Check vehicle applicability
28A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Ford | MUSTANG MACH E ↗ | 2024 |
| Ford | MUSTANG MACH E ↗ | 2023 |
| Ford | MUSTANG MACH E ↗ | 2022 |
| Ford | MUSTANG MACH E ↗ | 2021 |
| Land Rover | DISCOVERY ↗ | 2017 |
| Land Rover | DISCOVERY ↗ | 2016 |
| Land Rover | RANGE ROVER ↗ | 2017 |
| Land Rover | RANGE ROVER ↗ | 2016 |
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.