U0184low severityNetwork
Lost Communication with Radio Module
on 2009 Toyota Matrix 1.8L I4 · FWD
What this code means
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.
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ANCEL AD410 →
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Serious DIY~$100
BlueDriver Pro →
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Autel MaxiCOM MK808S →
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Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
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Other Network codes on this vehicle
U0001
High Speed CAN Communication Bus
U0002
High Speed CAN Communication Bus Performance
U0003
High Speed CAN Communication Bus (+) Open
U0004
High Speed CAN Communication Bus (+) Low
U0005
High Speed CAN Communication Bus (+) High
U0006
High Speed CAN Communication Bus (-) Open
U0007
High Speed CAN Communication Bus (-) Low
U0008
High Speed CAN Communication Bus (-) High
U0009
High Speed CAN Communication Bus Shorted Together
U0010
Medium Speed CAN Communication Bus