B1551 on 2021-2024 Ford Bronco — Radio/Tuner (HD Radio) Module Malfunction
1 vehicles · 1 makes
How to diagnose and fix B1551: most-reported vehicles
Ranked by owner reports. Each card gives the symptoms, how to confirm the cause, the fix, parts and sources for that vehicle.
Ford Bronco · 2021–2024
Bronco owners have widely reported SYNC 4 system instability including frozen screens, random reboots, black displays, loss of audio, and backup camera image failures. Ford has issued software-related service communications for infotainment and camera concerns, and owner forums contain many repeat reports across trims. While often software-related, some vehicles also needed APIM updates or module replacement.
Common Symptoms
- Infotainment screen freezes
- Random system reboot
- Black screen
- Backup camera unavailable
- Audio cuts out
- Bluetooth or CarPlay disconnects
How to Fix
Start by checking for Ford software updates, APIM calibration updates, and any TSBs related to SYNC or camera operation. Perform a master reset only after documenting settings, then inspect battery health and module voltage stability because low voltage can worsen infotainment glitches. Persistent black-screen or camera failures may require APIM or camera module diagnosis and replacement.
Sources for this issue (1)
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B1551 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does B1551 mean?
B1551 stands for "Radio/Tuner (HD Radio) Module Malfunction." B1551 is a manufacturer-specific body code that, on several applications (e.g., Toyota/Lexus), indicates a malfunction in the radio/HD Radio tuner module, meaning the audio system detected a tuner hardware or communication fault. Symptoms are limited to the audio/infotainment system, such as loss of radio reception, poor signal quality, or no audio. It does not affect drivability or safety. Because meaning can vary by maker, confirm against your vehicle's service data.
What are the most common causes of B1551?
The most common causes of B1551 are: Faulty radio/HD Radio tuner module, Antenna or antenna-cable fault, Wiring or connector problem at the tuner, Software/programming glitch in the audio system, Loss of power or ground to the tuner, Faulty audio/head unit module. The specific cause varies by vehicle.
How much does it cost to fix B1551?
Repair costs vary widely depending on the root cause and vehicle.
Which vehicles are affected by B1551?
Au7o has documented B1551 across 1 vehicle models from 1 manufacturers: Ford.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.