U0206
NetworkModule Communicationmoderate severityLost Communication With Chime/Buzzer Module
What U0206 Means
A control module lost communication with the chime/buzzer module over the data bus. This can disable warning chimes and audible alerts.
Symptoms
- No warning chimes or buzzers
- Missing alerts for open doors or belts
- Fault code stored
Common Causes
- Faulty chime/buzzer module
- Wiring or connector fault
- Blown fuse or power loss to module
- Damaged data bus circuit
Diagnostic Steps
- Scan for related U-codes on all modules
- Check power and ground at chime module
- Inspect bus wiring and connectors for damage
- Test module communication with scan tool
🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
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Serious DIY~$100
BlueDriver Pro →
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Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
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