Knowledge base
Bluetooth
Possible causes
- Bluetooth module fault
- Pairing/software fault
Safe test steps
- Remove and re-pair; update app/firmware.
Workshop reference values
- No general documented measurement value – manufacturer service documentation required.
Repair approach
- Software update; persistent fault: replace module/display.
Tools needed
- Manufacturer dealer diagnostic tool/software (if available)
Safety
- Power down (remove the battery) before unplugging connectors. Never apply pack voltage to data wires.
Related verified fault codes
| Code | Meaning | Component | Reliability |
|---|---|---|---|
| Bafang 81 | Bluetooth module fault | Bluetooth | Per manufacturer documentation |