E019
Alfen
DC Residual Current Detection Trip
E019 displayed; charger indicates DC fault current above threshold and stops charging.
Advertisements
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.
Advertisements
Possible Causes
Vehicle onboard charger leaking DC current, Moisture or contamination causing DC leakage paths, Faulty RDC‑DD sensor, Incorrect calibration of DC detection circuit
How to Fix / Troubleshooting
Safety first: DC leakage is a safety issue. Do not repeatedly reset without investigation.
- Step 1 – Try another vehicle: Connect a different EV to see if E019 is vehicle‑specific.
- Step 2 – Inspect for moisture: With power OFF, check the socket, cable entry, and internal wiring for moisture or conductive contamination. Dry and clean as needed.
- Step 3 – Power cycle: After drying, leave the charger off for at least 30 minutes, then power up and test again.
- Step 4 – RDC‑DD module check: A technician should verify the operation of the RDC‑DD sensor using appropriate test equipment.
- When to call a technician: Persistent E019 across multiple vehicles requires professional testing and likely replacement of the RDC‑DD module or main PCB.
Advertisements
Repair Difficulty
Professional Required
5/5
Required Part
RDC-DD Residual Current Sensor Module
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements