Error 23 on Bafang C965 Display

In plain English

On bikes where the controller powers the lights, a damaged light, a pinched light cable or water in the light plug can cause a fault the controller detects. The bike may still ride, but get it fixed, because a short in the light circuit can damage the controller.

Work from the top. Steps go from free and easy to shop jobs. Switch the bike off before touching any connector. Tick each step as you go. Your progress is saved on this device.

1. 1Switch the lights offFree Turn the lights off on the display and see if the code clears. If it does, the fault is in the light circuit.
2. 2Turn it off and on againFree Switch the display off, wait 30 seconds, then switch it back on. If the code clears, note what you were doing when it appeared, in case it comes back.
3. 3Check the light wiringEasy Switch off. Unplug the headlight (and tail light, if it has one), then switch on. If the code clears, the light or its cable is shorted or damaged.
4. 4Check the cables where the handlebars turnEasy Turn the bars fully left and right while watching the cables at the front of the bike. Look for pinched, stretched or flattened spots.
5. 5Dry the bike out if it got wetModerate If the problem started after rain or washing, remove the battery and leave the bike somewhere warm and dry for 24 to 48 hours, then test again.
6. 6Replace the headlightModerate If the code only clears with the light unplugged, replace the light. Match the voltage your controller supplies to the lights. Your manual lists it.
7. 7Have the controller testedShop job If the wiring checks out, the controller may be faulty. A shop can test it and replace it if needed.

Parts you might need

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Only buy a part if the free steps didn't fix it. Always match the voltage and connector type to your bike.

• E-bike headlight

  Match the light voltage your controller supplies. Your manual lists it.

  Link coming soon

• Electrical contact cleaner spray

  Cleans dirt and corrosion from connector pins and battery contacts.

  Link coming soon

• Dielectric grease

  A thin coat on connector seals helps keep water out after you clean them.

  Link coming soon