U0184Lost Communication With Radio
- Generic OBD-II code · Network
- How the car detects it
- U0184 is logged when the radio or infotainment head unit no longer answers on the bus; cluster, gateway, HVAC or amplifier store it, often several at once. GM bulletin 16-NA-115 (many 2014 GM models) reprograms the radio when it stays silent, shows a dark display or fails to wake up. Ford SSM 49695 (F-Super Duty 2020-2021) first rules out transport mode, then pulls fuse F32 in the BCM for five minutes before reseating the audio module connector. Stellantis case S2208000124 notes that the code can set when the radio wakes late on the audio CAN bus and to inspect the security gateway terminals before replacing anything. The Saab 9-5 list carries it too. Sound, display and phone functions fail; no MIL. U0186 is the amplifier.
- What you may notice
- Radio dead, screen blank or no sound
- Phone, reversing camera or voice control not available
- U0184 stored in several modules
- Likely causes
- LikelyRadio software hang or wake-up problem, fixed by reset or reprogramming (GM, Ford)
- PossibleSpread or pushed-out terminals at radio or security gateway (Stellantis)
- RareVehicle still in transport mode (Ford)
- RareRadio or head unit faulty
- Repair
- Medium · Usually a job for a workshop.Typical cost: €0 – €1,200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.