Splitvolt EV charger shows E03 and will not initiate charging when the vehicle is connected.

Safety first: Ground faults can be dangerous. Do not bypass or defeat GFCI protection. Disconnect power at the breaker before handling wet components.

• Inspect for moisture: Check the J1772 connector, cable, and the vehicle inlet for signs of water, condensation, or corrosion. If wet, disconnect from power and allow all components to dry completely (at least 24 hours in a dry environment).
• Check cable integrity: Visually inspect the entire Splitvolt cable for cuts, abrasions, or crushed sections. If any copper conductors are exposed or the jacket is deeply damaged, discontinue use and replace the cable assembly.
• Clean the connector: With power OFF, gently clean the J1772 pins with a dry, lint-free cloth. Do not use solvents or sprays inside the connector.
• Try another vehicle or outlet: If possible, test the charger on a different EV and/or a different properly wired outlet to isolate whether the fault follows the charger or the vehicle.
• If E03 remains: The internal GFCI/ground fault detection module or control board may be defective. This is not user-serviceable; contact Splitvolt or a qualified EVSE technician for repair or replacement.