E-Bike Doctor PRO
KT (Kunteng) · Controller

06 KT (Kunteng) error code 06

Motor or controller short-circuit abnormality (KT-LCD3 manual)

Widely published – may differ by model/firmware

Note

Pairing inferred from order.

Safety

  • If the motor brakes strongly even unpowered or the controller is warm/smells burnt: do not repower.

Possible causes

General, component-based causes – not a manufacturer-specific statement.

  • Internal controller fault (power stage, supply)
  • Over-current or short on the motor/phase side
  • Firmware/configuration error

Safe test steps

  • Burnt smell, discoloration, water traces on the controller.
  • Rule out motor, Hall, throttle and brake signal before replacing the controller.

Workshop reference values

  • No general documented measurement value – manufacturer service documentation required.

Repair approach

  • Fit a controller of the same voltage/current class and compatible protocol.

Tools needed

  • Digital multimeter (CAT III, fused inputs)
  • Basic hand tools, insulated screwdrivers
  • Manufacturer dealer diagnostic tool/software (if available)

Safety

  • Do not reconnect a controller suspected of a short to the battery.

This information does not replace manufacturer service documentation. Work on batteries and high-voltage parts only with the appropriate expertise.