- Electric mobility
- Electric scooter
Error 18
Xiaomi Error 18 on electric scooter: motor Hall sensor fault
Risk level
Medium
Proceed carefully and stop if the check is unclear.
Urgency
Medium
Quick answer
Xiaomi Error 18 points to a motor Hall sensor fault and usually leaves the motor dead when you press the throttle. Do not ride or open the wheel: Xiaomi recommends contacting its after-sales service. Note when it appeared and whether there was a knock or water.
Safety first
Stop and check this first
- Xiaomi marks Error 18 as not rideable on the 6 Pro. Do not open the motor or the deck: the controller shares space with the lithium battery and Xiaomi refers you to after-sales.
Safe checks you can perform
- Error details in the app
- Recent knocks or repairs on the drive wheel
- Motor behaviour when pushed
Leave these tasks to a qualified professional
- Do not attempt this professional task: Hall connection and cable test
- Do not attempt this professional task: Ruling out the controller
What a technician must be able to justify
A technician is coming
These are the steps they must carry out and show you. Tick them as they work: if steps are skipped, do not accept a part swap.
These are not instructions for opening or handling the equipment yourself. They are the checks that should support a technical conclusion.
Hall connection and cable test
What they doAuthorized service checks the connector and cable between motor and controller and measures the Hall signal with the scooter open.
They must show youthe loose connector or the signal reading.
In writingthe finding and whether the harness, Hall board or motor was replaced.
Ruling out the controller
What they doIf cable and sensors are fine, the technician checks the controller's reading circuit and replaces it if damaged.
They must show youthat the error stays with a good motor or clears with the new controller.
In writingthe part replaced and the ride test.
Before accepting a part or repair
Nothing has been shown yet. Do not accept a part swap based on the code alone.
Checks and evidence, step by step
Follow the documented order. An error code identifies the affected system, but it does not prove by itself which part has failed.
- 1
Error details in the app
No special tools
Procedure
- Who:
- you.
- How:
- connect the scooter to the Mi Home/Xiaomi Home app; Xiaomi says the error shows on the home page and tapping it opens the detailed description.
- Result that matters:
- that the app confirms Error 18 and not a similar number.
- If the app shows the same code:
- do not try to force it to drive and get the details ready for service.
- If it shows another code or none:
- note the one it shows, because it changes the diagnosis.
- Evidence to keep:
- an app screenshot with the code, the date and the exact scooter model.
Evidence: Xiaomi Electric Scooter 5 Plus FAQ
- 2
Recent knocks or repairs on the drive wheel
No special tools
Procedure
- Who:
- you.
- How:
- think about whether the motor wheel took a hard knock, had a tyre changed or anyone worked on the scooter before the error.
- Result that matters:
- whether Error 18 started after that event.
- If it lines up:
- tell the service; it steers them towards the Hall cable and connector.
- If nothing happened:
- none of Xiaomi's three causes is ruled out.
- Evidence to keep:
- date of the knock or repair and who did it.
Evidence: Xiaomi Electric Scooter 6 Pro Error code and repair guideline
- 3
Motor behaviour when pushed
No special tools
Procedure
- Who:
- you, with the scooter off, walking beside it.
- How:
- push the scooter a few metres without riding and listen to whether the drive wheel turns freely or makes odd noises.
- Result that matters:
- whether the wheel turns without rubbing or knocking.
- If it turns freely:
- the fault points to the Hall signal, not a mechanical jam.
- If it rubs or knocks:
- mention it to service as an extra symptom.
- Evidence to keep:
- a video with sound while pushing the scooter.
Evidence: Xiaomi Electric Scooter 6 Pro Error code and repair guideline
Where this code applies
A code is meaningful only inside the right product and version context.
Primary scope
- System
- Electric mobility
- Brand
- Xiaomi
- Product type
- Electric scooter
Known code variants
- Error 18 fan error
- Fan error
- Mi Electric Scooter error 18
- Ninebot codigo 18
- Ninebot error 18
- patinete Segway error 18
- patinete Xiaomi error 18
- Roborock Error 18
- Segway error 18
- Segway Ninebot E2 Pro error 18
- Segway Ninebot error code 18
- Xiaomi 6 Pro error 18
- Xiaomi error 18
- Xiaomi motor hall error 18
- Xiaomi scooter error 18
What it means
Xiaomi defines code 18 as a motor Hall fault: the connection between the motor's Hall sensors and the controller is loose or the Hall component is damaged. The controller uses those sensors to know the rotor position; without a valid signal it cannot drive the motor. The official fix runs through three parts: Hall cable or motor, Hall board or motor, and the controller's reading circuit. So the code does not prove the motor has failed. Xiaomi's support page ties the error to the motor not responding to the throttle.
Warnings and stop conditions
- Mediumeditorial warning
Xiaomi marks Error 18 as not rideable on the 6 Pro. Do not open the motor or the deck: the controller shares space with the lithium battery and Xiaomi refers you to after-sales.
Evidence: Xiaomi Electric Scooter 6 Pro Error code and repair guideline · Mi Electric Scooter error 18 alarms and there is no output from motor when press accelerator
Symptoms and causes
Probable causes · in order
- Loose Hall connectionCommon
Xiaomi lists it first: the cable between motor and controller is loose. It can follow a knock to the wheel or an earlier repair.
Evidence: Xiaomi Electric Scooter 6 Pro Error code and repair guideline · Xiaomi Electric Scooter 5 Plus FAQ
- Damaged Hall cable or failed Hall sensorPossible
If the connection is fine, the technician finds a damaged cable (harness or motor replaced) or sensor (Hall board or motor).
Evidence: Xiaomi Electric Scooter 6 Pro Error code and repair guideline · Xiaomi Electric Scooter 5 Plus FAQ
- Controller reading circuitPossible
Cable and motor are fine. Xiaomi replaces the controller when its Hall reading circuit or terminals are damaged.
Evidence: Xiaomi Electric Scooter 6 Pro Error code and repair guideline · Xiaomi Electric Scooter 5 Plus FAQ
Virtual technician
Does Error 18 still appear after these checks?
Answer a few questions to narrow down the likely cause and the safest next action. Guidance only - it never replaces a professional.
Sources and technical references
- 1
Xiaomi Electric Scooter 6 Pro Error code and repair guideline
Xiaomi · 2026 · official_doc
- 2
Xiaomi Electric Scooter 5 Plus FAQ
Xiaomi · 2026 · official_doc
- 3
Mi Electric Scooter error 18 alarms and there is no output from motor when press accelerator
Xiaomi · 2026 · official_doc
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