E02
Garo
Ground Fault / Residual Current Detection Trip
Charger shows E02 and refuses to charge, often immediately after plugging in the vehicle.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Leakage current detected by internal RCD module, Moisture ingress in Type 2 socket, Damaged cable insulation, Fault in Garo RDC-DD / RCD sensor on main board
How to Fix / Troubleshooting
Safety first: Do not repeatedly reset if you suspect a real earth fault. Turn off the charger at the breaker before inspection.
- Visual inspection: Check the Type 2 socket or tethered plug for signs of moisture, condensation, or dirt. Dry the area thoroughly with a clean, dry cloth. Do not use heat guns or open flames.
- Inspect cable: Look along the full length of the charging cable for cuts, abrasions, or crushed sections. If any damage is visible, stop using the cable and replace it.
- Check for water ingress: With power OFF, open the Garo charger enclosure. Look for water marks, corrosion, or dampness around the RCD/RDC-DD sensor and main control board. If moisture is present, allow the unit to dry completely in a warm, ventilated area and identify the source of ingress (damaged seals, cable glands).
- Reset and test: After drying and reassembling, restore power and attempt a charge. If E02 reappears immediately with different vehicles and cables, the internal RCD/RDC-DD module or its sensing coil is likely faulty and should be replaced by a qualified electrician familiar with Garo chargers.
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Repair Difficulty
Hard
4/5
Required Part
RCD / RDC-DD Module (Garo Residual Current Sensor)
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