This article explains how to troubleshoot common KAABO central display error codes on the Kaabo Mantis King GT. 

Use this article if your scooter shows:

• E30 communication error
• E04 throttle error
• E05 undervoltage error
• E02 motor Hall sensor error
• E06 controller error
• E01 phase loss error
• E08 high temperature protection error

Before You Start

Please prepare the following:

• Your order number
• A photo/video of the error code
• A photo of the display
• A video showing the issue
• Confirmation whether the scooter powers on
• Confirmation whether the motors engage
• Details about whether the issue started after:
  • water exposure
  • crash or impact
  • modification
  • display replacement
  • added electronics
  • third-party repair

If there is visible wiring damage, please also prepare clear photos.

Safety Warnings

• Do not continue riding if the scooter shows persistent error codes, motor resistance, overheating, smoke, burning smell, or visible wiring damage.
• Do not work on wiring while the scooter is powered on unless specifically required for testing.
• Do not force connectors together.
• Stop and contact support if unsure.

E30 – Communication Error

This issue may be caused by:

• Added electronic accessories
• Modified wiring
• Loose wiring connections
• Display faults
• Junction box faults
• Controller communication faults
• Main line wiring faults

Step 1 – Check for Modifications or Added Electronics

Check whether the scooter has:

• Added electronic accessories
• Modified wiring
• Removed factory components 

If modifications or added electronics are found

Remove the added components and restore the scooter wiring to its original condition.

Then test the scooter again.

If there are no modifications

Continue to Step 2.

Step 2 – Check the Display Connector Pins

Inspect the waterproof display connector pins for:

• Bent pins
• Damaged pins
• Misaligned terminals 

If bent or damaged pins are found

Carefully straighten the pins if possible and reconnect the display.

Then test the scooter again.

If the pins appear normal

Continue to Step 3.

Step 3 – Check the SM9 Wiring Connection

Open the controller compartment cover and inspect the SM9 connector between the display main line and the junction box. 

Gently check the red and yellow wires for:

• Loose wiring
• Incorrect connections
• Unplugged terminals

If wiring issues are found

Reconnect the wiring securely and test again.

If the wiring appears normal

Continue to Step 4.

Step 4 – Junction Box Isolation Test

Open the battery compartment cover and disconnect the 6-pin waterproof connector between the junction box and controller A. 

Turn the display on again.

If the E30 error disappears

The junction box may require further inspection.

Please contact support with:

• A video showing the test
• Photos of the connector area

If the E30 error remains

Continue to Step 5.

Step 5 – Controller Isolation Test

Disconnect the 7-pin waterproof connector between controller B and the main controller. 

Turn the display on again.

If the E30 error disappears

Controller B may require further inspection.

Please contact support with:

• A video showing the test
• Photos of the controller wiring

If the E30 error remains

Controller A or the display main line may require further inspection. 

Please contact support with:

• Photos of all related connectors
• A video showing the issue

E04 – Throttle Error

This issue may be caused by:

• Modified wiring
• Throttle faults
• Loose wiring
• Controller faults
• Display main line faults

Step 1 – Check for Wiring Modifications

Check whether the scooter wiring has been modified. 

If modifications are found

Restore the scooter to its original wiring configuration and test again.

If there are no modifications

Continue to Step 2.

Step 2 – Check the Throttle Connector

Disconnect the throttle 3-pin waterproof connector and inspect the pins for:

• Bent pins
• Loose terminals
• Damage 

If bent pins are found

Straighten the pins carefully, reconnect the throttle, and test again.

If the pins appear normal

Continue to Step 3.

Step 3 – Check the Main Line Wiring

Open the controller compartment cover and inspect the wiring between the display main line and controller A. 

Check the green wire for:

• Loose wiring
• Incorrect connections
• Unplugged terminals

If wiring issues are found

Reconnect the wiring securely and test again.

If the wiring appears normal

Continue to Step 4.

Step 4 – Further Inspection Required

If the E04 error remains after the wiring checks:

• Controller A
• The display main line
• The throttle assembly

may require further inspection. 

Please contact support with:

• A video showing the error
• Photos of the throttle connector
• Photos of the wiring

E05 – Undervoltage Protection Error

This issue may be caused by:

• Low battery charge
• Battery faults
• Incorrect P8 voltage setting
• Controller faults

Step 1 – Charge the Scooter

When the E05 error appears, check whether the scooter battery is low and fully charge the scooter. 

If the scooter charges and operates normally afterwards

The issue was likely caused by low battery voltage.

If the issue remains

Continue to Step 2.

Step 2 – Check for Battery Range Issues

Check whether:

• The battery charges unusually quickly
• The scooter shuts down after only a short ride
• The scooter reports E05 after riding only a few kilometres 

If these symptoms occur

The battery may require further inspection.

Please contact support with:

• A video showing the issue
• Charger behaviour video
• Riding distance details

If these symptoms do not occur

Continue to Step 3.

Step 3 – Check the P8 Voltage Setting

The Kaabo Mantis King GT is a 60V scooter. 

The P8 voltage parameter should be set to:

• 60V

If the P8 setting is incorrect

Correct the setting and test the scooter again.

If the P8 setting is already correct

Continue to Step 4.

Step 4 – Controller Inspection Required

If:

• The battery is charged
• The battery behaviour appears normal
• The P8 setting is correct
• The E05 error still appears

Controller A may require further inspection. 

Please contact support with:

• Photos of the display settings
• A video showing the error code

E02 – Motor Hall Sensor Error

This issue may be caused by:

• Loose Hall sensor wiring
• Damaged motor wiring
• Motor faults
• Controller faults

The display may indicate:

• Front motor Hall sensor fault
• Rear motor Hall sensor fault

Step 1 – Check the Hall Sensor Wiring

Open the battery compartment cover and inspect the SM5 connector between the motor Hall sensor wiring and the controller. 

Check for:

• Loose connectors
• Foreign material on the pins
• Wiring damage
• Broken insulation

If dirt or foreign material is found

Clean the connector carefully and reconnect it securely.

If damaged insulation is found

Wrap the damaged section using high-temperature resistant insulating tape.

If the wiring appears normal

Continue to Step 2.

Step 2 – Further Motor or Controller Testing Required

Additional Hall sensor isolation testing may be required between:

• The motor
• Controller A
• Controller B 

This is an advanced electrical testing step.

Please contact support before continuing.

Provide:

• A video showing the error
• Photos of all Hall sensor connectors
• Details about which motor is affected

E06 – Controller Error

This issue may be caused by:

• Loose controller wiring
• Controller faults

Step 1 – Check Controller Connector Wiring

Open the controller compartment cover and inspect the controller connector wiring. 

Check whether:

• The XHB8 connector between the front controller and junction box is loose
• The XHB9 connector between controller A and the junction box is loose

If loose wiring is found

Reconnect the wiring securely and test again.

If the wiring appears normal

Continue to Step 2.

Step 2 – Further Controller Inspection Required

If the E06 error remains after the wiring checks:

• Controller A
• Controller B/front controller

may require further inspection. 

Please contact support with:

• A video showing the error
• Photos of all controller connectors

E01 – Phase Loss Error

This issue may be caused by:

• Loose motor phase wires
• Damaged motor wiring
• Controller faults
• Display faults

The display may indicate:

• Front drive phase loss
• Rear drive phase loss

Step 1 – Identify Which Motor Is Affected

Check whether the display indicates:

• Front drive phase loss
• Rear drive phase loss 

Then continue with the relevant motor checks below.

Step 2 – Check the Motor Phase Wires

Open the battery compartment cover and inspect the yellow, green, and blue phase wires between the motor and controller. 

Check for:

• Loose connectors
• Foreign material on the pins
• Damaged insulation
• Wiring damage

If dirt or foreign material is found

Clean the connector carefully and reconnect it securely.

If damaged insulation is found

Wrap the damaged section using high-temperature resistant insulating tape.

If the wiring appears normal

Continue to Step 3.

Step 3 – Further Inspection Required

If the E01 error remains after the wiring checks:

• Controller A
• Controller B
• The display

may require further inspection. 

Please contact support with:

• A video showing the error
• Photos of all phase wire connectors
• Details about whether the front or rear motor is affected

E08 – High Temperature Protection Error

This issue may be caused by:

• Extreme riding conditions
• Controller overheating
• Loose motor phase wiring

Step 1 – Allow the Scooter to Cool Down

If the E08 error appears while riding:

• Stop riding immediately
• Turn the scooter off
• Leave the scooter for approximately 30 minutes 

Then power the scooter back on after the controller temperature has reduced.

If the issue is resolved

The controller likely entered temperature protection mode.

Monitor the scooter during future rides.

If the issue remains

Continue to Step 2.

Step 2 – Check the Motor Phase Wire Connections

Open the controller compartment cover and inspect the yellow, green, and blue phase wires between the motor and controller. 

If loose wiring is found

Reconnect the wiring securely and test again.

If the wiring appears normal

Further controller inspection may be required.

Please contact support with:

• A video showing the error
• Photos of the phase wire connectors
• Details about riding conditions before the error occurred

When To Contact Support

Please contact support if:

• The error code remains after completing these checks
• The scooter has visible wiring damage
• There was water exposure, impact, modification, or third-party repair
• The scooter overheats repeatedly
• There is motor resistance
• The scooter accelerates unexpectedly
• Internal electrical inspection may be required
• The scooter is unsafe to ride

What To Send Support

Please provide:

• Your order number
• A photo/video of the error code
• A photo of the display
• A video showing the issue
• Photos of visible wiring or connector damage
• Confirmation of:
  • water exposure
  • crash or impact
  • modifications
  • added electronics
  • third-party repair
• Details of troubleshooting already completed

Important Safety Notes

• Do not continue riding with unresolved error codes.
• Do not ride with overheating, motor resistance, visible wiring damage, smoke, or burning smell.
• Do not work on wiring while the scooter is powered on unless specifically required for testing.
• Do not force connectors together.
• Stop troubleshooting and contact support if unsure.