U0184
Lost Communication with Radio Module
2016-2021 Mazda CX-3 2.0L I4
Low SeverityNetworkGeneric (SAE)
Description
Cannot communicate with the radio or entertainment system head unit.
Symptoms
- Radio display blank
- No audio
- Infotainment system offline
- Touchscreen not responding
- Backup camera display not available
Common Causes
- Radio module failure
- CAN bus wiring
- Module power loss
- Fuse blown
- Software crash
Diagnostic Steps
- Check radio fuse
- Test power and ground
- Check CAN wiring
- Try radio reset procedure
- Check for software update availability
Repair Notes
Check fuses. Many head units can be reset by pulling the fuse for 30 seconds.
Related Codes
Other Network Codes
- U0001High Speed CAN Communication Bus
- U0001High Speed CAN Communication Bus
- U0002High Speed CAN Communication Bus Performance
- U0002High Speed CAN Communication Bus Performance
- U0003High Speed CAN Communication Bus (+) Open
- U0003High Speed CAN Communication Bus (+) Open
- U0004High Speed CAN Communication Bus (+) Low
- U0004High Speed CAN Communication Bus (+) Low
- U0005High Speed CAN Communication Bus (+) High
- U0005High Speed CAN Communication Bus (+) High
U0184 on Other Vehicles
Common Questions
What does code U0184 mean on a 2016-2021 Mazda CX-3?
U0184 stands for "Lost Communication with Radio Module". Cannot communicate with the radio or entertainment system head unit.
What are the symptoms of U0184 on a Mazda CX-3?
Common symptoms of U0184 include: Radio display blank, No audio, Infotainment system offline, Touchscreen not responding, Backup camera display not available.
What causes U0184 on a 2016-2021 Mazda CX-3?
Common causes of U0184 include: Radio module failure, CAN bus wiring, Module power loss, Fuse blown, Software crash.