Ebike error codes and their solutions – Bosch 503, Shimano W103 and more | E-MOUNTAINBIKE Magazine
Error on ebike bosch drive unit dont worry read this and solve any pr
Bosch Performance E-Bike motor trainer service Manuel | eBay
503 Error,how can i fix this? The battery works just fine,and for a moment,the battery would work after 25 km/h,i was with 30 km/h and the battery was working,i didnt upgraded the