Bafang · Bluetooth
81 Bafang error code 81
Bluetooth module fault
Per manufacturer documentation
Note
Meaning may depend on model, display and firmware – verify with the manual of the exact type.
Possible causes
General, component-based causes – not a manufacturer-specific statement.
- 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.
This information does not replace manufacturer service documentation. Work on batteries and high-voltage parts only with the appropriate expertise.