E25
Enel X
EVSE‑Vehicle Handshake / PWM Communication Error
Charger shows E25 and refuses to start; app may indicate ‘vehicle communication error’ or ‘EVSE‑EV handshake failed’.
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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
Incorrect pilot duty cycle generation, Faulty vehicle inlet, Damaged pilot circuit on control board, Firmware incompatibility with specific EV
How to Fix / Troubleshooting
Safety: This is a signaling issue; standard electrical precautions still apply.
- Step 1 – Try another EV: Test the charger with a different vehicle to determine if the issue is charger‑side or vehicle‑specific.
- Step 2 – Firmware update: Update the charger firmware via the Enel X app to ensure compatibility with newer vehicles.
- Step 3 – Connector inspection: Check the connector pins for damage or contamination that could affect the pilot signal.
- Step 4 – Internal pilot circuit check (advanced): With power OFF, inspect the pilot driver components on the main control board for visible damage.
- Resolution: If E25 occurs with multiple vehicles and the connector is good, replace the main control board.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board
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