Okai Error Code 27E

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"The BMS heartbeat fault."

If your Okai-Electisan vehicle is beeping or has a red wrench icon and flashes this code, read below.

If you clicked the wrong error code, go back to the Error Code Index.

Previous Error Code: Okai Error Code 26E - Next Error Code: Okai Error Code 28E

Cause

Error code 27E indicates that the Battery Management System (BMS) is not sending out a regular heartbeat signal to the meter. This could be due to:

  • Faulty BMS: The BMS itself might be malfunctioning, preventing it from sending the heartbeat signal.
  • Loose connection: The connection between the BMS and the meter might be loose, interrupting the signal.
  • Faulty Battery: The battery might have a problem that is preventing the BMS from working correctly.

Fix

  • Check if the connection of the battery is loose.
  • Change the battery.