E18
Hyundai
Internal Energy Meter / Current Sensor Fault
E18 appears and the charger reports a metering or energy measurement error.
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
Failed current transformer (CT) on power board, Loose CT harness connection, Corrupted calibration data in meter IC, Faulty energy metering chip on control board
How to Fix / Troubleshooting
Safety first: Turn off power at the breaker before opening the charger.
- Inspect CTs: Locate the current transformers around the phase conductors. Ensure they are properly clipped and their connectors are fully seated.
- Check wiring: Look for damaged or pinched CT wires.
- Power cycle: Restore power and see if E18 clears after reboot.
- Calibration: Some Hyundai chargers allow meter recalibration via service tools; this should be done by an authorized technician.
- If E18 persists: Replace the CT assembly or the main control/power board that contains the metering IC.
Advertisements
Repair Difficulty
Hard
4/5
Required Part
Current Transformer Assembly / Metering Circuit
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements