Pinion MGU (FIT) · Speed sensor
Pinion MGU (FIT) error code 4B-xx
Fault in the speed sensor the motor uses
What you can check
Check that the spoke magnet and speed sensor are in place and lined up. Switch the bike off and on.
Dealer if the fault comes back
Trolda reads live data from Pinion MGU (FIT) bikes. What Trolda shows on your bike
Same part: Speed sensor
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.