All E-Bike Error Codes

Look up a code by its number to see what it means on every display, or browse each display's full list from its manual.

Which code list does my display use?

Look at how the code appears on your screen:

E plus two digits (like E07): the S866 list.
A plain number from 1 to 13 next to an "Error" label: the SW900 list.
A number followed by "info" (like 03 info): the KT-LCD3 / LCD4 list.
A number from 21 to 30 on a King-Meter or KD display: the King-Meter / KD list.
A two-digit number on a Bafang system: it depends on the display, because Bafang's lists differ. Check the label on the back: DPC-18, C961, C965, 850C, E162 / E163.
Flashing lights instead of a number: Bafang E170 / E180 / E181.

Still not sure? Look up your code number to see what it means on every display we cover.

Code	Manual wording
E01	Reserved
E02	Brake
E03	Power assist sensor (PAS) failure
E04	6 km/h push (walk) mode
E05	Cruise mode
E06	Battery undervoltage
E07	Motor failure
E08	Throttle fault
E09	Controller failure
E10	Communication receive failure
E11	Communication send failure
E12	BMS communication failure
E13	Headlight failure

Code	Manual wording
01 info	Throttle abnormality
03 info	Motor Hall signal abnormality
04 info	Torque sensor signal abnormality
05 info	Axis speed sensor abnormality (only applied to torque sensor systems)
06 info	Motor or controller has short circuit

Code	Manual wording
1	Save
2	Brakes
3	PAS problem (a riding mark)
4	6KM/H cruising
5	Real-time cruising
6	Battery is under-voltage
7	Motor's problem
8	Throttle's problem
9	Controller's problem
10	Communication receiving problem
11	Communication sending problem
12	BMS communication problem
13	Headlight problem

Code	Manual wording
21	Current abnormality
22	Throttle abnormality
23	Motor abnormality
24	Motor Hall signal abnormality
25	Brake abnormality
30	Communication abnormality

Code	Manual wording
04	The throttle has not returned home
05	Throttle fault
07	Overvoltage protection
08	Motor hall signal cable fault
09	Motor phase cable fault
11	Controller temperature sensor fault
12	Current sensor fault
13	Battery temperature fault
14	Motor temperature fault
21	Speed sensor fault
22	BMS communication fault
30	Communication fault

Code	Manual wording
04	Throttle no homing
05	Throttle abnormality
06	Low voltage protection
07	Over voltage protection
08	Hall sensor abnormality
09	Phase line abnormality
10	Controller overheat
11	Temperature sensor in controller abnormality
12	Current sensor abnormality
21	Speed sensor abnormality
22	Communication abnormality in BMS

Code	Manual wording
03	Brake signal
06	Low voltage protection
07	High voltage protection
08	Hall line of motor error
09	Phase line of the motor error
10	High temperature of controller
11	Controller's temperature sensor error
12	Current sensor error
13	Battery temperature sensor error
14	Motor temperature sensor error
21	Motor speed sensor error
22	BMS communication error
23	Head light error
30	Communication error

Code	Manual wording
04	Throttle on high position
05	Throttle error
06	Low voltage protection
07	High voltage protection
08	Motor's hall sensor error
09	Phase line of motor error
10	Controller over temperature
11	Motor over temperature
12	Current sensor error
13	Battery's temperature sensor error
14	Motor's temperature sensor error
15	Controller's temperature sensor error
21	Speed sensor error
22	BMS communication error
23	Head light error
24	Head light sensor error
25	Torque sensor error (torque)
26	Torque sensor error (speed)
30	Communication error

Code	Manual wording
05	Throttle not in place
07	System overvoltage protection
08	Hall signal in motor is abnormal
09	Phase wire in motor abnormal
10	Motor overtemperature protection
11	Motor temperature sensor abnormal
12	Controller current sensor abnormal
14	Controller overtemperature protection
15	Controller temperature sensor abnormal
21	Speed sensor abnormal
26	Torque sensor abnormal
30	Communication abnormal
36	ON/OFF button detection circuit abnormal
37	WDT (watch dog timer) in controller is abnormal
42	Discharge voltage of battery pack is too low
49	Discharge voltage of single cell is too low
4C	Voltage difference between single cell

Code	Manual wording
04	The throttle has fault
05	The throttle is not back in its correct position
07	Overvoltage protection
08	Error with the hall sensor signal inside the motor
09	Error with the engine phases
10	The temperature inside the engine has reached its maximum protection value
11	The temperature sensor inside the motor has an error
12	Error with the current sensor in the controller
13	Error with the temperature sensor inside of the battery
14	The protection temperature inside the controller has reached its maximum protection value
15	Error with the temperature sensor inside the controller
21	Speed sensor error
25	Torque signal error
26	Speed signal of the torque sensor has an error
27	Overcurrent from controller
30	Communication problem
33	Brake signal has an error (if brake sensors are fitted)
35	Detection circuit for 15V has an error
36	Detection circuit on the keyboard (keypad) has an error
37	Controller WDT circuit is faulty
38	Sensor WDT circuit is faulty
41	Total voltage from the battery is too high
42	Total voltage from the battery is too low
43	Total power from the battery cells is too high
44	Voltage of the single cell is too high
45	Temperature from the battery is too high
46	The temperature of the battery is too low
47	SOC of the battery is too high
48	SOC of the battery is too low
61	Gear shift defects (E170) / switching detection defect (E180, E181)
62	Gear shift cannot release (E170) / electronic derailleur cannot release (E180, E181)
71	Electronic lock is jammed
81	Bluetooth module has an error