KT (Kunteng) · Torque sensor
04 KT (Kunteng) error code 04
Torque sensor signal abnormality (KT-LCD3 manual)
Widely published – may differ by model/firmware
Note
Pairing inferred from order; relevant only to torque-sensor systems.
Possible causes
General, component-based causes – not a manufacturer-specific statement.
- Torque sensor calibration/initialisation error
- Load on the pedal at power-up
- Sensor or cable fault
Safe test steps
- No foot on the pedal at power-up; restart.
- Mechanical condition of crank/axle.
Workshop reference values
- Do not apply universal voltage values to an unknown sensor.
Repair approach
- Manufacturer calibration procedure; persistent fault: dealer.
Tools needed
- Manufacturer dealer diagnostic tool/software (if available)
- Basic hand tools, insulated screwdrivers
Safety
- For tests with a spinning wheel use a secure work stand with the driven wheel raised.
This information does not replace manufacturer service documentation. Work on batteries and high-voltage parts only with the appropriate expertise.