English – 67
Code Cause Corrective measures
(does not apply to
BUI350)
431 Software version error Restart the system. If the problem per-
sists, contact your Bosch eBike dealer.
440 Internal drive unit fault Restart the system. If the problem per-
sists, contact your Bosch eBike dealer.
450 Internal software error Restart the system. If the problem per-
sists, contact your Bosch eBike dealer.
460 Error at USB port Remove the cable from the USB port of
the on-board computer. If the problem
persists, contact your Bosch eBike
dealer.
490 Internal fault of the on-
board computer
Have the on-board computer checked
500 Internal drive unit fault Restart the system. If the problem per-
sists, contact your Bosch eBike dealer.
502 Bike light fault Check the light and the associated
wiring. Restart the system. If the prob-
lem persists, contact your Bosch eBike
dealer.
503 Speed sensor fault Restart the system. If the problem per-
sists, contact your Bosch eBike dealer.
504 Speed signal distortion
detected.
Check that the spoke magnet is posi-
tioned correctly, and adjust it if neces-
sary. Check that nothing has been tam-
pered with (tuning). Drive assistance is
reduced.
510 Internal sensor fault Restart the system. If the problem per-
sists, contact your Bosch eBike dealer.
511 Internal drive unit fault Restart the system. If the problem per-
sists, contact your Bosch eBike dealer.
530 Battery fault Switch off the eBike, remove the eBike
battery and reinsert the eBike battery.
Bosch eBike Systems 1 270 U20 Nen | (02.10.2020)
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