The Bosch system is continuously monitored. If an error is detected, the corresponding error code is displayed on the on-board computer. The drive may be automatically shut down, depending on the type of error. However, if you wish to continue cycling, you will always be able to do so without assistance from the drive. Before undertaking any other journeys, the Carqon should be checked. Have all repairs performed only by your own Carqon dealer or at an authorised Carqon dealer.
Bosch error code list
| Error Code | Description | Troubleshooting |
| 410 | One of more buttons of the on-board computer are blocked. | Check if any buttons are blocked, e.g. from dirt or debris. Clean the buttons if required. If the problem persists, contact your Carqon dealer. |
| 414 | Connection problem of the operating unit. | Check connections and contacts. If the problem persists, contact your Carqon dealer. |
| 418 | One of more buttons of the operating unit are blocked. | Check if any buttons are blocked, e.g. from dirt or debris. Clean the buttons if required. If the problem persists, contact your Carqon dealer. |
| 422 | Connection problem of the drive unit. | Check connections and contacts. If the problem persists, contact your Carqon dealer. |
| 423 | Connection problem of battery pack. | Check connections and contacts. If the problem persists, contact your Carqon dealer. |
| 424 | Communication error among the components. | Check connections and contacts. If the problem persists, contact your Carqon dealer. |
| 426 | Internal time-out error. | Restart the system. If the problem persists, contact your Carqon dealer. |
| 430 | Internal battery of on-board computer empty. | Charge on-board computer ( in holder or via USB port). If the problem persists, contact your Carqon dealer. |
| 440 | Internal error of the drive unit. | Restart the system. If the problem persists, contact your Carqon dealer. |
| 450 | Internal software error. | Restart the system. If the problem persists, contact your Carqon dealer. |
| 490 | Internal error of the on-board computer. | Check the on-board computer. If the problem persists, contact your Carqon dealer. |
| 500 | Internal error of the drive unit. | Restart the system. If the problem persists, contact your Carqon dealer. |
| 502 | Illumination error. | Check the light and the associated wiring. Restart the system. If the problem persists, contact your Carqon dealer. |
| 503 | Speed sensor error | Restart the system. If the problem persists, contact your Carqon dealer. |
| 510 | Internal sensor error | Restart the system. If the problem persists, contact your Carqon dealer. |
| 511 | Internal error of the drive unit | Restart the system. If the problem persists, contact your Carqon dealer. |
| 530 | Battery pack error | Switch off the Carqon, remove the battery pack and reinsert the battery pack. Restart the system. If the problem persists, contact your Carqon dealer. |
| 531 | Configuration error | Restart the system. If the problem persists, contact your Carqon dealer. |
| 540 | Temperature error | The system is outside the permissible temperature range. Switch off the Bosch 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 Carqon dealer. |
| 550 | An improper load was detected | Remove load. Restart the system. If the problem persists, contact your Carqon dealer. |
| 602 | Internal battery pack error while charging | Unplug the charger from the battery pack. Restart the Bosch system. Plug the charger into the battery pack. If the problem persists, contact your Carqon dealer. |
| 602 | Internal battery pack error | Restart the system. If the problem persists, contact your Carqon dealer. |
| 603 | Internal battery pack error | Restart the system. If the problem persists, contact your Carqon dealer. |
| 605 | Battery pack temperature error | The Carqon is outside the permissible temperature range. Switch off the Bosch system and allow the drive unit and battery to either cool down or heat up to the permissible temperature. Restart the system. If the problem persists, contact your Carqon dealer. |
| 605 | Battery pack temperature error while charging | Unplug the charger from the battery pack. Allow the battery pack to cool. If the problem persists, contact your Carqon dealer. |
| 606 | External battery pack error | Check the wiring. Restart the system. If the problem persists, contact your Carqon dealer. |
| 610 | Battery pack voltage error | Restart the system. If the problem persists, contact your Carqon dealer. |
| 620 | Charging error | Replace the charger. Contact your Carqon dealer. |
| 640 | Internal battery pack error | Restart the system. If the problem persists, contact your Carqon dealer. |
| 655 | Multiple battery pack errors | Switch off the Bosch system. Remove the battery pack and reinsert it. Restart the system. If the problem persists, contact your Carqon dealer. |
| 656 | Software version error | Contact your Carqon dealer to perform a software update. If the problem persists, contact your Carqon Dealer. |
| No Display | Internal error of the on-board computer | Restart your Bosch system. If the problem persists, contact your Carqon dealer. |