U0184 Lost communication with radio
What U0184 means
The radio or infotainment unit is a module on the car's network and exchanges data with the cluster, steering wheel controls and other systems. U0184 means other modules stopped hearing from it. It does not affect how the car drives, but audio, navigation, phone or display functions may stop working.
U0184 is a generic SAE J2012 code: it means the same on every make. The exact cause still depends on the car, so read the freeze-frame data before replacing parts.
At a glance
- Severity
- Medium
- Typical repair cost
- 50–1200 €
- Workshop time
- 0.5–4 h
- Repair difficulty
- Medium
- DIY possible
- No
- Check engine light
- No
- Affects emissions test
- No
Parts and labour at an independent workshop in Europe. Main dealers charge more; the cause decides the bill, not the code.
Symptoms
- Radio or infotainment screen not working
- No sound, phone or navigation
- Steering wheel audio buttons not working
- Rear-view camera image missing on some cars
Common causes
- Blown radio fuse
- Radio switched off by battery protection after low voltage
- Loose connector behind the radio after fitting accessories
- Infotainment software crash or failed update
- Failed radio unit
Can I keep driving with U0184?
Yes, you can drive; this does not affect the engine or brakes. Have it checked within one or two weeks if the radio or display does not recover.
What to check first
- Check the radio fuse and battery voltage
- Try a reset: switch off, lock the car, wait several minutes and restart
- Check connectors behind the unit, especially after any aftermarket installation
- Check for infotainment software updates before replacing the unit
Related codes
- U0140 Lost communication with body control module
- U0127 Lost communication with tyre pressure monitor module
- U0126 Lost communication with steering angle sensor module
- U0121 Lost communication with ABS control module
- U0120 Lost communication with starter/generator control module
- U0109 Lost communication with fuel pump control module
- U0252 Lost communication with rear lighting control module B
- U0046 Vehicle communication bus C fault
Data: TORKO fault-code catalogue, built on OBDex (CC0-1.0) and reviewed against workshop practice. Informational only — it does not replace a diagnosis by a mechanic.
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