Kia EV home charger displays E02 and refuses to start charging when the vehicle is connected.

Safety first: Ground fault errors indicate a potential shock hazard. Do not bypass safety devices. If you smell burning or see smoke, shut off power at the main panel and call a professional immediately.

• 1. Inspect for moisture: Check the charger housing, cable, and connector for signs of water ingress (condensation inside lens, wet cable, water trails). If wet, switch off the breaker and allow the unit to dry for at least 24 hours in a dry environment before retrying.
• 2. Check the supply ground: At the main panel or subpanel, verify that the EV charger circuit’s earth/ground conductor is securely connected. This should be done by a qualified electrician with a tester.
• 3. Try another parking position: If the cable is stretched or pinched under a tire, internal insulation may be compromised. Reposition the vehicle and visually inspect the full length of the cable for cuts or abrasions.
• 4. Test with another EV (if available): If another Kia or compatible EV also triggers E02, the fault is likely in the charger or its wiring, not the vehicle.
• 5. Internal RCD/RCM check (technician): With power isolated and cover removed, a technician can test the residual current monitor module and associated wiring. If the RCM is tripping at very low leakage or shows abnormal readings, the RCD/RCM module or main control board should be replaced.

If E02 recurs frequently without visible damage or moisture, discontinue use and schedule service. Persistent earth leakage faults must be professionally investigated.