Safety first: Overcurrent can damage wiring. If breakers are tripping, do not repeatedly reset.

Check configuration: Access the Garo charger's configuration (DIP switches or installer menu) and confirm the maximum current setting matches the supply cable and breaker rating.
Test with another vehicle: If possible, try charging a different EV. If E05 only occurs with one vehicle, the issue may be with that vehicle's onboard charger.
Inspect output wiring: With power OFF, check all output terminals from the contactor to the Type 2 socket or tethered cable. Look for loose screws, discoloration, or damaged insulation.
Check current sensor: Locate the current transformer (CT) or shunt on the main board or wiring harness. Ensure the conductor passes correctly through the CT and that the CT connector is firmly seated on the control board.
Professional testing: If wiring and settings are correct but E05 persists with multiple vehicles, a technician should measure actual load current and may need to replace the CT or main control board.

E05 displayed, charging stops shortly after starting or will not start at all.

Possible Causes