Splitvolt EV charger displays E12 and will not start charging; often associated with very low or no current draw even when the vehicle requests charge.

Safety first: Even if no current is flowing, treat all wiring as live until the breaker is off.

• Listen for relay click: When starting a charge, you should hear a distinct click from inside the Splitvolt charger. No click plus E12 suggests the relay is not closing.
• Check vehicle side: Confirm the vehicle is not limiting current due to its own fault. Try another EV if available.
• Power reset: Turn the breaker OFF for a few minutes, then ON, and attempt to start charging again.
• Internal fault likely: If E12 persists, the main output relay or its driver circuit on the control board is likely defective. This requires internal testing and relay/board replacement by a qualified technician.