Yamaha PW error 36: Torque sensor voltage error at low speed
The drive system has measured an out-of-range reference voltage from the torque sensor specifically while the cranks are turning slowly. The controller interprets this as an unreliable torque reading and shuts down motor assist as a safety response. Power assist, walk-assist and torque-related functions are unavailable until the fault is cleared.
| Drive system | Yamaha PW series (PW-X3, PW-S2, PW-ST, PWseries CE - also Giant SyncDrive) |
| Severity | Dealer needed |
| Keep riding? | Do not keep riding |
| Typical cost | Expect a dealer diagnostic and voltage adjustment around 40 to 90 EUR, a torque sensor replacement roughly 120 to 250 EUR including labour, and a controller assembly replacement around 200 to 450 EUR depending on the PW model. |
Likely causes
- Torque sensor reference voltage has drifted out of specification
- Loose, oxidised or contaminated connector at the torque sensor or controller
- Damaged or pinched wiring harness between sensor and controller
- Sensor mounting loose, over-torqued or misaligned in the bottom bracket
- Controller unable to read or interpret the torque sensor signal correctly
- Moisture ingress into the bottom bracket area corroding sensor contacts
How to fix Yamaha PW error 36
- Switch the system off, wait 30 seconds, then power on again to see if the code clears.
- Remove the battery and inspect the torque sensor connector and the controller-side plug for bent pins, corrosion or moisture; clean and reseat if accessible.
- Trace the wiring from the torque sensor to the controller and look for chafed insulation, broken strands or pinched sections near the bottom bracket.
- Check that the crank arm and bottom bracket are correctly seated and that no aftermarket components are interfering with the torque sensor ring.
- Take the bike to an authorised Yamaha dealer for the torque sensor reference voltage adjustment with the diagnostic tool.
- If the adjustment does not hold, have the dealer replace the torque sensor or the controller assembly as required.
Warranty: A genuine component failure of the torque sensor or controller inside the typical two-year warranty period is normally covered, while water ingress, crash damage and wear-related failures are not.
Typical cost: Expect a dealer diagnostic and voltage adjustment around 40 to 90 EUR, a torque sensor replacement roughly 120 to 250 EUR including labour, and a controller assembly replacement around 200 to 450 EUR depending on the PW model.
Frequently asked
Can I reset yamaha error 36?
You can try a full power cycle with the battery removed for 30 seconds, but error 36 is a reference voltage fault and almost always returns once riding resumes. A permanent reset requires a dealer to clear the code with the diagnostic tool after the underlying cause is fixed.
Is it safe to keep riding with error 36?
No. The bike runs without motor assist, but the torque sensor is giving the controller an unreliable signal and continued riding can mask a worsening electrical fault. Get the bike to a dealer as soon as possible.
How much will the repair cost and is it under warranty?
A calibration typically runs 40 to 90 EUR, a torque sensor replacement 120 to 250 EUR and a controller replacement 200 to 450 EUR. If the sensor or controller fails inside the two-year warranty window on a bike with original components, Yamaha or the OEM partner normally covers the part.
Related Yamaha PW codes
Manuals and video
Official source: cdn2.yamaha-motor.eu
Not an official Yamaha PW document. Compiled from workshop experience and public service information; details can differ per system version and bike brand.