Xiaomi Scooter Error 14 & 15: Throttle & Brake Hall Sensor Diagnostics — 3-Step Fix & Part Fitment
Cause: Xiaomi M365, Pro 2, 1S, 3, and 4 Pro throttle (14) or brake lever (15) Hall sensor voltage out of range. Ride Status: STOP — Motor Disabled & Red Wrench Flashing. Signal Pattern: 1 Long + 4 (or 5) Short Beeps. Most riders resolve ERR 14/15 in 10–15 min using the 3-step diagnostic checklist below (starting with the free mechanical/connector reset before ordering a €11 – €18 replacement sensor).
Interactive 3-Step Workshop Repair Checklist (Check as You Test)
Power off. Flick both the thumb throttle and brake handle several times. If you installed an aftermarket waterproof silicone dashboard cover, make sure its edge isn't rubbing against the rotating throttle barrel.
Pop off the plastic display cover, unscrew the 4 small Phillips screws holding the BLE circuit board, and dry the 3-pin throttle and 2-pin brake connectors with isopropyl alcohol.
Pull back the right handlebar grip, loosen the 3mm hex clamping screw on the throttle ring, thread the plug through the handlebar slot, and plug in the new accelerator.
Model Variant Pinout & Part Compatibility Matrix
| Model / Generation | OEM Part / Ref | Connector / Harness Type | Workshop Installation Note |
|---|---|---|---|
| Xiaomi M365 / 1S / Essential / Pro / Pro 2 | XM-M365-THR-ORIG | 3-Pin Yellow/Black JST Plug | Direct plug-and-play under top BLE board. |
| Xiaomi Electric Scooter 4 Pro / 4 Ultra | XM-4PRO-THR-01 | Updated Sealed Connector | Peel top adhesive bezel carefully using a warm hairdryer. |