Bafang error 71: Electronic lock cannot be locked
Bafang CAN systems (M400/M500/M600/M620, DP C18 CAN, 850C/860C CAN)InformationSafe to keep riding
The integrated electronic lock (frame or motor lock on some Bafang CAN bikes) did not engage when requested. Riding is unaffected; the anti-theft feature is not working.
Likely causes
- Lock mechanism blocked by dirt or a slightly rotating wheel
- Lock actuator connector loose
- Lock actuator failed
- Low battery voltage during the lock command
How to fix Bafang error 71
- Hold the bike still and retry locking
- Clean around the lock mechanism
- Check the lock connector
- Have the actuator replaced by a dealer
Go to a dealer if: Go to a shop if the lock never engages; the actuator needs replacing.
Warranty: If the bike or kit is under warranty (usually 1-2 years via the seller), contact them before opening anything, as opened motors and controllers can void the claim.
Typical cost: Lock actuator EUR/USD 50-150.
Warranty: If the bike or kit is under warranty (usually 1-2 years via the seller), contact them before opening anything, as opened motors and controllers can void the claim.
Typical cost: Lock actuator EUR/USD 50-150.
Still stuck? Take a photo of the display and show it to a local e-bike workshop. Bring the bike's system name (e.g. Bosch Performance Line CX) and the exact code; that saves diagnostic time and money.
Frequently asked
Can I reset error 71?
Retry the lock command; the code clears on a successful lock.
Can I keep riding?
Yes, normally. Use a physical lock in the meantime.
Warranty?
Yes as a component defect.
Related Bafang codes
Not an official Bafang document. Compiled from workshop experience and public service information; details can differ per system version and bike brand.