Land Rover home charger displays E04 and refuses to start; sometimes accompanied by a breaker trip.

Safety warning: Overcurrent conditions can cause overheating and fire. Turn off the charger at the breaker before inspection.

• 1. Confirm circuit rating: Verify that the dedicated EV circuit breaker rating matches the Land Rover charger configuration (e.g., 32 A charger on a 40 A breaker). If unsure, consult installation documentation.
• 2. Check charger current setting: Using the Land Rover charger app or internal DIP switches (with power OFF), confirm the maximum current is set to match the supply and wiring capacity. Reduce the setting if necessary.
• 3. Inspect output cable: Look for hot spots, discoloration, or melted insulation along the cable and at the plug. If any damage is found, replace the cable before further use.
• 4. Listen for contactor operation: With the cover on and power restored, start a charge session and listen for a clear click from the internal contactor. If the charger shows E04 without a proper contactor engagement, the contactor may be faulty.
• 5. Check for shared loads: Ensure no other high-current devices are connected to the same circuit as the Land Rover charger. The charger must be on a dedicated circuit.
• 6. If E04 continues: A professional should test the contactor, internal wiring, and current sensors. Replace the main power contactor or control board if found defective.