U0184 on Audi
Lost Communication With Radio
U0184 on Audi vehicles indicates lost communication with radio. Au7o has documented this code across 1 Audi model — most commonly on Q7. This network code means a module stopped receiving expected communication messages from the radio/audio module over the vehicle's data bus. When the radio module goes offline or its bus connection fails, this code is logged. On some vehicles the audio module also acts as a network gateway, so its loss can trigger several related communication codes. Symptoms are typically a dead or unresponsive radio/infotainment system; it does not affect drivability.
Common Causes of U0184
- •Loss of power or ground to the radio/audio module
- •Blown radio fuse
- •Wiring or connector fault on the communication bus
- •Faulty radio/audio control module
- •Corroded or loose module connector
- •Network/bus wiring short affecting multiple modules
U0184 on Audi by Model
Audi Q7(1 issue)
- 2017-2019 Q7 4M MMI Touch Response Spontaneous Reboot and Blank Screen with CarPlay/Android Auto2017-2019
The 4M Q7's dual-screen MMI Touch Response infotainment head unit reboots on its own while driving - screens go black, the system restarts, and radio/navigation/phone drop out, sometimes several times on a long trip. A related and better-documented fault covered by Audi service bulletins: with the Audi Smartphone Interface, the MMI screen goes blank after a phone is plugged into the USB port, or freezes while Apple CarPlay or Android Auto is running. Owners also report the system degrading progressively when navigation is active with several devices on the WiFi hotspot until it hangs and resets.
Looking for U0184 on a different make?
View U0184 across all makes →Frequently Asked Questions
What does U0184 mean on Audi?▼
U0184 stands for "Lost Communication With Radio." This network code means a module stopped receiving expected communication messages from the radio/audio module over the vehicle's data bus. When the radio module goes offline or its bus connection fails, this code is logged. On some vehicles the audio module also acts as a network gateway, so its loss can trigger several related communication codes. Symptoms are typically a dead or unresponsive radio/infotainment system; it does not affect drivability. On Audi specifically, this code is documented across 1 model.
What causes U0184 on Audi vehicles?▼
Common causes on Audi: Loss of power or ground to the radio/audio module, Blown radio fuse, Wiring or connector fault on the communication bus, Faulty radio/audio control module, Corroded or loose module connector. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix U0184 on a Audi?▼
Repair costs vary widely depending on the root cause and specific Audi model.
Which Audi models have U0184 documented?▼
Au7o has documented U0184 on 1 Audi model: Q7.