OKAI ES20 - OKAI ES20 Error Code Explanations

7.Explanation of error codes
Error
number
Error name The reason Troubleshooting method
When the battery voltage is
lower than 30±1V
1.Check the controller battery wiring
and eliminate the bad wiring
2.Replace the controller
3.Replacement battery
1.Re-upgrade the instrument program
2. Replace the controller
Poor contact of the battery
communication line or defective
device
Instrument program upgrade failed
17E
01E
02E
03E
04E
05E
06E
07E
The instrument communication
connector is faulty or the device
is faulty
08E
09E
10E
11E
The instrument communication
connector is faulty or the device
is faulty
12E
13E
Overcurrent
protection
The instantaneous output
current of the controller exceeds
the current limit range(＞22A)
Short circuit of motor phase line
when unlocking
The motor is blocked or short-
circuited, or the drive is faulty
The drive upper bridge MOS tube
is damaged or broken down
The hall wiring sequence is wrong
or the connection is bad
The driving lower bridge MOS
tube is damaged or broken down
The controller output current is less
than 22A and then recovers
1. The fault is resolved automatically
after charging
2. Replace the battery
1. Replace the motor
2. Replace the controller
Replace the controller
1. The plug-in connection is bad,
reconnect it
2. Replace the motor
1. Release the locked-rotor state
2. Replace the motor
Replace the controller
Left brake lever Hall failure or
poor connection
Handlebar malfunction or poor
connection
Motor temperature exceeds the
normal operating temperature
1. Check the brake lever wiring to
eliminate poor contact
2. Replace the left brake lever
1. Check the connection of the switch
handle and eliminate the poor contact
2. Replace the handle
3. Release the handle
1. Stop riding and cool down, and
wait for the fault to be resolved by itself
2. Replace the motor
1. Check the wiring of the instrument
and the central control harness plug-in
of the instrument, and eliminate the
poor contact
2. Replace the meter
1. Check the wiring of the instrument
and the central control harness plug-in
of the instrument, and eliminate the
poor contact
2. Replace the controller
1.Re-upgrade the battery program
2.Replacement battery
Battery program upgrade failed16E
Controller program upgrade failed15E
1. Re-upgrade the controller program
2. Replace the controller
18E
1. Put the transfer back into place
2. Replace the handle
3. Release the handle
The handle turns back into
position when turning on or the
handle is damaged
19E
Battery
communication
failure
Instrument firmware
is missing
Battery protection
board is missing
Electronic control
receivingtimeout
failed
Controller dropped
Undervoltage
protection
Motor phase line
failure
The upper MOS
tube is damaged
Motor Hall failure
Locked-rotor
protection
Damaged lower
MOS tube
Motor overheated
Left brake
failure
Lever failure
Controller firmware
is missing
Handlebar does
not return
Left brake lever
is not reset
1. Return the left brake lever
2. Replace the left brake
The left brake does not return
or the left brake is damaged
when starting up
20