Bosch Nyon Operating Instructions Manual page 59

Code Cause
605 Battery pack
temperature error
605 Battery pack
temperature error
while charging
606 External battery pack
error
610 Battery pack voltage
error
620 Charging error
640 Internal battery pack
error
655 Multiple battery pack
errors
656 Software version error Contact your Bosch eBike dealer so
Internal error of the 
No dis-
play on-board computer
Bosch eBike Systems
Corrective Measure
The eBike is outside of the permissible
temperature range. Switch off the
eBike system and allow the drive unit
to either cool down or heat up to the
permissible temperature. Restart the
system. If the problem persists,
contact your Bosch eBike dealer.
Unplug the charger from the battery
pack. Allow the battery pack to cool. If
the problem persists, contact your
Bosch eBike dealer.
Check the wiring. Restart the system.
If the problem persists, contact your
Bosch eBike dealer.
Restart the system. If the problem per-
sists, contact your Bosch eBike dealer.
Replace the charger. Contact your
Bosch eBike dealer.
Restart the system. If the problem per-
sists, contact your Bosch eBike dealer.
Switch off the eBike system. Remove
the battery pack and reinsert it.
Restart the system. If the problem per-
sists, contact your Bosch eBike dealer.
that he can perform a software
update.
Restart your eBike system by
switching it off and back on.
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