What Bafang says
The Bluetooth module has an error.
Bafang's recommended steps
- If the problem continues, contact your retailer or a shop that works on Bafang systems.
- A shop will re-load the display software with BESST, or replace the display.
Summarized from Bafang DP C244/C245 dealer manual (error 81), checked October 23, 2026. Follow the link for Bafang's exact wording.
If it keeps coming back
If the code comes back after a restart, have it checked by a mechanic who works on Bafang systems. Bikes Plus works on Bafang and Bafang-style systems all the time.
Write down the code and what you were doing when it appeared. That saves time at the shop.
Make sure it's a Bafang code
Error numbers mean different things on different systems. This page covers bikes with a Bafang display (the Bafang name or logo is usually on the display or its back), on Bafang mid-drive and hub-motor systems. Displays with a screen keep the last 10 codes in the INFO or ERROR menu. LED-only displays flash the code: the first light flashes the tens digit and the second the units, so two flashes then five is 25.