TQ HPR50 / HPR60 · Range extender · Error
TQ HPR50 / HPR60 error code ERR 503D
A hardware fault in the range extender
What you can check
Switch the bike off, wait a few seconds and switch it on again.
Dealer if the fault comes back
Trolda reads live data from TQ HPR50 / HPR60 bikes. What Trolda shows on your bike
Same part: Range extender
Sources
- TQ HPR50 – Error codes (Rev0201) (2023-12)
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 TQ HPR50 / HPR60 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.