Bosch (Purion, Intuvia, Kiox, Nyon) error codes

Older Bosch bikes (Purion, Intuvia, Kiox and Nyon) show the fault as a three-digit code on the display, such as 503. Bikes with the Bosch Smart System (from 2022) show six characters and use a different table.

Trolda cannot read Bosch (Purion, Intuvia, Kiox, Nyon) motors yet. The code list is here to help you anyway.

Code	Part	What it means
410	Display	One or more buttons on the display are stuck
414	Control unit	The display has lost contact with the handlebar control unit
418	Control unit	A button on the handlebar control unit is stuck
419	System	Error in the system configuration
422	Motor	The display has lost contact with the motor
423	Battery	The system has lost contact with the battery
424	Communication	The system components can’t communicate with each other
426	System	An internal time-out in the system; the wheel size can’t be changed while it lasts
430	Display	The display’s built-in battery is empty (not on Nyon BUI350)
431	Software	A system component has the wrong software version
440	Motor	Internal motor error
450	Software	Internal software error in the system
460	Display	Fault in the display’s USB port
490	Display	Internal display error
500	Motor	Internal motor error
502	Lights	Fault in the bike’s lights
503	Speed sensor	The speed sensor isn’t giving a correct signal
504	Speed sensor	The system has detected a tampered speed signal and reduced the motor assistance
510	Sensor	Internal sensor error in the motor
511	Motor	Internal motor error
530	Battery	Battery fault
531	System	Error in the system configuration
540	Temperature	The motor is too hot or too cold and has switched off
550	System	A non-approved device is drawing power from the system
580	Software	A system component has the wrong software version
591	Battery	The system couldn’t authenticate the battery
592	Display	The display isn’t compatible with the rest of the system
593	System	Error in the system configuration
595	Gears	The system has lost contact with the electronic gear system
596	Gears	The system has lost contact with the electronic gear system
602	Battery	Internal battery error, which can also appear while charging
603	Battery	Internal battery error
605	Battery	The battery is too hot or too cold, also possible while charging
606	Battery	A fault outside the battery itself, in the connections around it
610	Battery	Battery voltage error
620	Charger	Charger fault
640	Battery	Internal battery error
655	Battery	The battery is reporting several faults at once
656	Battery	The battery has the wrong software version
7xx	Gears	Fault in a part from another manufacturer, usually an electronic gear system
800	ABS	Internal ABS error
810	ABS	ABS is getting implausible signals from a wheel speed sensor
820	ABS	Fault in the wiring to the front ABS speed sensor
821	ABS	ABS is getting implausible speed signals from the front wheel, often due to the sensor disc
822	ABS	ABS is getting implausible speed signals from the front wheel, often due to the sensor disc
823	ABS	ABS is getting implausible speed signals from the front wheel, often due to the sensor disc
824	ABS	ABS is getting implausible speed signals from the front wheel, often due to the sensor disc
825	ABS	ABS is getting implausible speed signals from the front wheel, often due to the sensor disc
826	ABS	ABS is getting implausible speed signals from the front wheel, often due to the sensor disc
830	ABS	Fault in the wiring to the rear ABS speed sensor
831	ABS	ABS is getting implausible speed signals from the rear wheel, often due to the sensor disc
833	ABS	ABS is getting implausible speed signals from the rear wheel, often due to the sensor disc
834	ABS	ABS is getting implausible speed signals from the rear wheel, often due to the sensor disc
835	ABS	ABS is getting implausible speed signals from the rear wheel, often due to the sensor disc
840	ABS	Internal ABS error
850	ABS	Internal ABS error
860	ABS	Fault in the ABS power supply
861	ABS	Fault in the ABS power supply
870	ABS	ABS can’t communicate with the rest of the system
871	ABS	ABS can’t communicate with the rest of the system
880	ABS	ABS can’t communicate with the rest of the system
883	ABS	ABS can’t communicate with the rest of the system
884	ABS	ABS can’t communicate with the rest of the system
885	ABS	ABS can’t communicate with the rest of the system
889	ABS	Internal ABS error
890	ABS	The ABS warning light is faulty or missing, and ABS may not work

Sources

Bosch Intuvia BUI251/BUI255 original instructions (1 270 020 XBI), error code table (2018-05-14)
Bosch Kiox BUI330 original instructions (1 270 020 Kde), error codes — copy hosted by emtb-news.de (2020-08-25, published by a dealer or bike brand)

Explained in Trolda's own words from the manufacturer's public documentation. Trolda is not affiliated with the manufacturer. If in doubt, ask your dealer.

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