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S866 Error Code

E08 - Motor Phase Fault

Motor phase wire signal is abnormal.

High severityStop

What it means

Power wires between controller and motor may be shorted or disconnected.

Common causes

  • Loose phase connector
  • Burned wire
  • Controller MOSFET fault

Symptoms

  • Motor vibrates
  • No rotation
  • Controller gets hot

Suggested fixes

  • Stop riding
  • Inspect phase wires
  • Check connectors
  • Service controller/motor
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