The alert means the proximity voltage is outside of expected range. These are the expected ranges on vehicles with a GB charge port, the AC portion of the charge port, and the IEC type 2 charge ports:
- 4.291V to 4.620V - No cable in the GB AC charge port.
- 4.280V to 4.291V - GB cable in the GB AC charge port, and the button is being held down, meaning the connector is unlatched.
- 3.525V to 3.892V - 10A GB cable in the GB AC charge port.
- 2.995V to 3.275V - 16A GB cable in the GB AC charge port.
- 1.740V to 2.035V - 32A GB cable in the GB AC charge port.
- 1.020V to 1.220V - 63A GB cable in the GB AC charge port.