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ENGWE EP-2 Pro

Folding electric bicycle. Electric folding bike. Display families M5, YL80C and YL80C EU have different error-code schemes.

Manufacturer reference linkedEdition check required
MODEL TROUBLESHOOTING

Start with the symptom, then follow the checks

First identify the display and its protocol (M5, YL80C, YL80C EU). Codes on one display must not be applied to another.

Before starting: Turn off the e-bike before inspecting accessible connectors. Do not open, short or bypass the battery pack or ride with an unresolved control fault.

Why is my ENGWE EP-2 Pro showing error E030 after a display swap?

E030 on compatible YL80C protocols is a communication fault. After a display swap, test compatibility before buying a controller.

Get step-by-step checks and outcomes →How do I fix E022 on my ENGWE EP-2 Pro display?

E022 means throttle-related fault in the specified YL80C protocol. Do not bypass the throttle safety circuit.

Get step-by-step checks and outcomes →What does E024 mean on my ENGWE EP-2 Pro?

E024 indicates a motor Hall-sensor fault on the specified YL80C protocol. Inspect the motor lead and connector before buying a hub motor.

Get step-by-step checks and outcomes →Why is my ENGWE EP-2 Pro showing E06?

E06 on LCD M5 indicates low battery voltage. First verify charge state and charger operation; do not open the battery.

Get step-by-step checks and outcomes →
Fault codes and status indicators (26) — check version before use
CodeMeaning in the referenced dataEdition / protocolImportant
E00Normal status (not a fault)LCD M5 displayConfirm installed control-panel edition
E06Low battery voltageLCD M5 displayConfirm installed control-panel edition
E07Motor faultLCD M5 displayConfirm installed control-panel edition
E08Throttle faultLCD M5 displayConfirm installed control-panel edition
E09Controller faultLCD M5 displayConfirm installed control-panel edition
E10Display receive-communication errorLCD M5 displayConfirm installed control-panel edition
E11Display transmit-communication errorLCD M5 displayConfirm installed control-panel edition
E001Controller faultYL80C / YL-01 or YL-02 protocolConfirm installed control-panel edition
E002Communication errorYL80C / YL-01 or YL-02 protocolConfirm installed control-panel edition
E003Motor Hall sensor faultYL80C / YL-01 or YL-02 protocolConfirm installed control-panel edition
E004Throttle faultYL80C / YL-01 or YL-02 protocolConfirm installed control-panel edition
E005Brake faultYL80C / YL-01 or YL-02 protocolConfirm installed control-panel edition
E006Motor phase-wire faultYL80C / YL-01 or YL-02 protocolConfirm installed control-panel edition
E021Abnormal currentYL80C / YL-05, KDS or YL-J protocolConfirm installed control-panel edition
E022Throttle faultYL80C / YL-05, KDS or YL-J protocolConfirm installed control-panel edition
E023Motor phase-wire faultYL80C / YL-05, KDS or YL-J protocolConfirm installed control-panel edition
E024Motor Hall sensor faultYL80C / YL-05, KDS or YL-J protocolConfirm installed control-panel edition
E025Brake faultYL80C / YL-05, KDS or YL-J protocolConfirm installed control-panel edition
E030Communication errorYL80C / YL-05, KDS or YL-J protocolConfirm installed control-panel edition
Error05Brake system faultYL80C EU displayConfirm installed control-panel edition
Error06Battery level lowYL80C EU displayConfirm installed control-panel edition
Error07Motor phase-wire faultYL80C EU displayConfirm installed control-panel edition
Error08Throttle faultYL80C EU displayConfirm installed control-panel edition
Error09Controller faultYL80C EU displayConfirm installed control-panel edition
Error10Receive-communication failureYL80C EU displayConfirm installed control-panel edition
Error11Transmit-communication failureYL80C EU displayConfirm installed control-panel edition
HARDWARE

Component & part identification

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Relevant assemblies

Display, controller, throttle, brake switch and motor Hall wiring.

Exact replacement part numbers are not displayed until documented compatibility is confirmed.