The meaning of error messages are listed in the Error Codes section of the user manual and can also be found in this article.
Code
| Causes | User Troubleshooting |
Battery errors |
|
|
B1 | Battery too hot while charging | Contact a partner garage for professional inspection. |
B2 | Battery too cold while charging | Contact a partner garage for professional inspection. |
B3 | Battery too hot while discharging | Let battery cool down for 30 minutes. |
B4 | Battery too cold while discharging | Let battery warm up indoors. |
B5 | Battery damage | Contact the unu Support team for replacement battery. |
B6 | Battery damage | Contact the unu Support team for replacement battery. |
B8 | Battery overheating | Stop driving and let battery cool down for 30 minutes. |
B9 | Battery overvoltage | Restart scooter and try again. |
B11 | Battery undervoltage | Fully recharge battery. |
B12 | Battery overcurrent while charging | Restart scooter. |
B13 | Battery overcurrent while discharging | Disconnect battery for 5 minutes and try again. |
B14 | Battery short circuit protection | Disconnect battery for 5 minutes and try again. |
B32 | Battery unresponsive | 1. Wait for 30 seconds for battery to recover |
B33 | Battery activation failed | 1. Wait for additional 30 seconds to activate |
B34 | Near Field Communication (NFC) error | Contact a partner garage for professional inspection. |
B35 | Internal communication error | Contact a partner garage for professional inspection. |
Electronic errors |
|
|
E1 | Battery voltage too high | Contact a partner garage for professional inspection. |
E2 | Battery voltage too low | Charge battery and try again. |
E3 | Scooter self-protection from motor short circuit | Contact a partner garage for professional inspection. |
E4 | Motor acceleration is blocked | Release throttle and accelerate again. |
E5 | Engine Control Unit (ECU) cannot read motor sensor | Contact a partner garage for professional inspection. |
E6 | Engine Control Unit (ECU) is damaged | Contact a partner garage for professional inspection. |
E7 | Engine Control Unit (ECU) detected open connection | Contact a partner garage for professional inspection. |
E10 | Engine Control Unit (ECU) failed during initialization | Reconnect battery and try to drive again. |
E11 | Engine Control Unit (ECU) overheating | Stop scooter and let it cool down. |
E12 | Problem detected when reading the throttle | Contact a partner garage for professional inspection. |
E14 | Throttle has been pulled during boot up | Release throttle and try again. |
E16 | Engine Control Unit (ECU) is damaged | Contact a partner garage for professional inspection. |
Multiple errors |
|
|
Multiple problems | When scooter has several errors | Contact the unu Support team. |