Knowledge base
Torque sensor
Possible causes
- 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.
Related verified fault codes
| Code | Meaning | Component | Reliability |
|---|---|---|---|
| Bosch 510 | Internal sensor error | Torque sensor | Per manufacturer documentation |
| Shimano STEPS W013 | Torque sensor initialisation was not completed normally | Torque sensor | Per manufacturer documentation |
| Bafang 25 | Torque sensor torque-signal fault | Torque sensor | Per manufacturer documentation |
| Bafang 26 | Torque sensor speed-signal fault | Torque sensor | Per manufacturer documentation |
| KT (Kunteng) 04 | Torque sensor signal abnormality (KT-LCD3 manual) | Torque sensor | Widely published – may differ by model/firmware |