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.
If error persists contact a partner garage for professional inspection.

B4

Battery too cold while discharging

Let battery warm up indoors.
If error persists contact a partner garage for professional inspection.

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.
If error persists contact a partner garage for professional inspection.

B9

Battery overvoltage

Restart scooter and try again.
If error persists contact a partner garage for professional inspection.

B11

Battery undervoltage

Fully recharge battery.
If error persists contact a partner garage for professional inspection.

B12

Battery overcurrent while charging

Restart scooter.
If error persists contact a partner garage for professional inspection.

B13

Battery overcurrent while discharging

Disconnect battery for 5 minutes and try again.
If error persists contact a partner garage for professional inspection.

B14

Battery short circuit protection

Disconnect battery for 5 minutes and try again.
If error persists contact a partner garage for professional inspection.

B32

Battery unresponsive

1. Wait for 30 seconds for battery to recover
2. Remove battery and wait for 1 minute
If error persists contact the unu Support team.

B33

Battery activation failed

1. Wait for additional 30 seconds to activate
2. Remove battery and turn by 180┬░ degrees
If error persists contact the unu Support team.

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.
If error persists contact a partner garage for professional inspection.

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.
If error persists contact a partner garage for professional inspection.

E11

Engine Control Unit (ECU) overheating

Stop scooter and let it cool down.
If error persists contact a partner garage for professional inspection.

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.
If error persists, contact a partner garage for professional inspection.

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.

Did this answer your question?