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Tongsheng TSDZ2 error E08: Motor hall / motor fault
Tongsheng TSDZ2 / TSDZ2B mid-drive with VLCD5, VLCD6 or XH18 displayDealer neededDo not keep riding
The controller detects a fault in the motor's hall sensor signals or the motor cannot be driven. Reports on the TSDZ2 typically describe a motor that judders or stays dead with E08. Cross-check your display manual, as numbering differs between VLCD5, VLCD6 and XH18 firmware.
| Drive system | Tongsheng TSDZ2 / TSDZ2B mid-drive with VLCD5, VLCD6 or XH18 display |
| Severity | Dealer needed |
| Keep riding? | Do not keep riding |
| Typical cost | Hall board EUR/USD 15-30; blue gear EUR/USD 10-20; controller EUR/USD 60-120. |
Likely causes
- Water in the motor reaching the hall sensor board
- Hall sensor board or its connector damaged
- Motor windings damaged after overheating
- Controller MOSFET failure
- Blue gear (plastic reduction gear) destroyed, leaving the motor spinning without load
How to fix Tongsheng TSDZ2 error E08
- Power cycle once
- Check the motor for water; dry thoroughly
- Open the motor and check the hall board connector and the blue gear
- Replace the hall board or the controller
- Have a shop test the motor if you are not comfortable opening it
Go to a dealer if: Go to a shop if you are not comfortable opening the TSDZ2 motor.
Warranty: TSDZ2 kits are usually covered 1 year by the reseller; motor and torque sensor faults are typical claims, water damage is not.
Typical cost: Hall board EUR/USD 15-30; blue gear EUR/USD 10-20; controller EUR/USD 60-120.
Warranty: TSDZ2 kits are usually covered 1 year by the reseller; motor and torque sensor faults are typical claims, water damage is not.
Typical cost: Hall board EUR/USD 15-30; blue gear EUR/USD 10-20; controller EUR/USD 60-120.
Still stuck? Take a photo of the display and show it to a local e-bike workshop. Bring the bike's system name (e.g. Bosch Performance Line CX) and the exact code; that saves diagnostic time and money.
Frequently asked
Can I reset E08?
No, unless a wet connector was the cause.
Can I keep riding?
No, pedal without assist.
Warranty?
Yes for hall board or controller defects within warranty.
Related Tongsheng TSDZ2 codes
Not an official Tongsheng TSDZ2 document. Compiled from workshop experience and public service information; details can differ per system version and bike brand.