Bosch Error Codes

Reviewed by certified eBike technicians · Last updated July 30, 2026

11 diagnostic codes for Bosch e-bike systems.

Error 500

Internal drive unit error — motor controller fault detected

Performance Line/CX/Active Line Error 530

Battery charge level discrepancy — BMS reporting inconsistent data

Performance CX Error 550

Speed sensor error — magnet misaligned or sensor dirty

All models Error 10

Speed sensor fault — rear wheel speed signal missing or erratic

Performance Line/CX/Active Line/Smart System Error 11

Motor lock detected — drive unit mechanically blocked or rotor stalled

Performance CX/CX Racing/Smart System Error 12

Communication error — CAN bus signal lost between drive unit and display/controller

All Bosch eBike Systems Error 13

Battery communication error — BMS and drive unit not exchanging data

All Bosch eBike Systems with PowerPack/PowerTube Error 14

Throttle fault — throttle signal out of range or unauthorized throttle detected

Performance Line/CX with throttle option Error 560

Battery overvoltage detected — battery voltage exceeds 54.6V maximum threshold on 48V systems

Performance Line/CX/Smart System Error 503

Battery communication error — BMS not responding or data link interrupted

Performance Line/CX/Smart System Error 510

Motor overheating — drive unit internal temperature exceeded 85°C thermal limit

Performance CX/CX Racing/Smart System

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