Pinion MGU (FIT) · Gears
Pinion MGU (FIT) error code 4D-03
The gearbox cannot shift for walk assist while there is pressure on the pedals
What you can check
Ease off the pedals and wait three seconds. Otherwise restart without pedal pressure and calibrate the gears in the display menu.
Dealer if the fault comes back
Trolda reads live data from Pinion MGU (FIT) bikes. What Trolda shows on your bike
Same part: Gears
Sources
Explained in Trolda's own words from the manufacturer's public documentation. Trolda is not affiliated with the manufacturer. If in doubt, ask your dealer.
Trolda for your e-bike
Trolda connects to your Pinion MGU (FIT) bike and shows what you did, what the motor did, and what it cost the battery.
Get TroldaTrolda is in open testing on iPhone and Android. You get the app through our tester page, it takes a minute.