Bosch Kiox Original Operating Instructions page 26

English – 10​
Code Cause
situation, e.g. riding solely on the rear
wheel
830 Fault in the wire to the rear wheel speed
sensor
831 Implausible signals from the rear wheel
833 to 835 speed sensor
The sensor disc may be missing, defective
or fitted incorrectly; there is a significant
difference in diameter between the front
wheel and the rear wheel; extreme riding
situation, e.g. riding solely on the rear
wheel
840 Internal ABS fault
850 Internal ABS fault
860, 861 Fault in the power supply
870, 871 Communication error
880
883 to 885
889 Internal ABS fault
890 ABS indicator light is defective or missing;
ABS may not be working.
No display Internal fault of the on-board computer
1 270 020 XBK | (12.03.2019)
Corrective measures
Contact your Bosch eBike dealer.
Restart the system and carry out a test ride lasting at least two
minutes. The ABS indicator light must go out. If the problem per-
sists, contact your Bosch eBike dealer.
Contact your Bosch eBike dealer.
Contact your Bosch eBike dealer.
Restart the system. If the problem persists, contact your Bosch
eBike dealer.
Restart the system. If the problem persists, contact your Bosch
eBike dealer.
Contact your Bosch eBike dealer.
Contact your Bosch eBike dealer.
Restart your eBike system by switching it off and back on.
Bosch eBike Systems