E12
NRGkick Internal Communication Bus Failure

Charger displays E12; internal communication error between control PCB and power module or communication bus fault.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Loose internal connector between logic and power boards, Damaged ribbon cable, Firmware incompatibility between modules, Faulty transceiver IC on control PCB

How to Fix / Troubleshooting

Safety first: Internal communication faults can cause unpredictable behavior. Do not attempt to operate the charger repeatedly in this state.

  • 1. Full power reset:
    • Unplug from mains and vehicle.
    • Wait at least 5 minutes to fully discharge internal circuits.
    • Reconnect and test.
  • 2. Firmware check:
    • Use the NRGkick app to verify firmware versions and perform any recommended updates.
  • 3. Environmental check:
    • Ensure the charger has not been exposed to severe vibration or impact that could loosen internal connectors.
  • 4. Professional inspection:
    • Internal connectors and bus transceivers require opening the housing.
    • Contact NRGkick or an authorized technician to inspect and reseat or replace internal harnesses and boards.
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Repair Difficulty

Professional Required 5/5

Required Part

Internal Communication Harness / Control PCB
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