Bafang BBS02B display 750C errorcode 12H

[gregerwhut]

Hello
I am having a bafang BBS02B with the errorcode 12H showing up on my 750C display. I have absolutely no idea what to do. Can anyone please give some advice ?
Thanks in advance

[zmarkjam]

Please see error code table below, Hexadecimal will show H behind.

0x01	Normal	No error	No error
0x03	Brake signal	No error	No error
0x04	Throttle on high position	show 04H	show 04
0x05	Throttle error	show 05H	show 05
0x06	Low voltage protection	show 06H	show 06
0x07	High voltage protection	show 07H	show 07
0x08	Motor’s hall sensor error	show 08H	show 08
0x09	Phase line of motor error	show 09H	show 09
0x10	Controller over temperature	show 10H	show 16
0x11	Motor over temperature	show 11H	show 17
0x12	Current sensor error	show 12H	show 18
0x13	Battery’s temperature sensor error	show 13H	show 19
0x14	Motor‘s temperature sensor error	show 14H	show 20
0x15	controller‘s temperature sensor error	show 15H	show 21
0x21	Speed sensor error	show 21H	show 33
0x22	BMS communication error	show 22H	show 34
0x23	Head light error	show 23H	show 35
0x24	Head light sensor error	show 24H	show 36
0x25	Torque sensor error-Torque	show 25H	show 37
0x26	Torque sensor error-speed	show 26H	show 38
0x30	Communication error	show 30H	show 30

Probably need a new controller.

[Aje]

Thank you for posting this table! I'm having all kinds of codes coming up suddenly, usually 30H, sometimes 21H, and a few lower codes I forget. Sometimes I get full current in ANY PAS level including level 0. I've tried loading different custom settings and have the same symptoms. Also the battery indicator suddenly drops to 0 and icon turns red, power cuts out, then back on and repeats. During this the speed display jumps all over the place. When I change PAS level I can get it to stay on consistently again without cutting out sometimes, but the bike feels crippled to ride this way. Luna suggested the controller is bad, it has less than 1000 miles and only 8 months old. This is the 2nd controller failure. The first one wouldn't stop assisting even after I stopped pedaling. They said controllers rarely fail, hopefully I don't have to keep replacing them.