E18
Electrify Home
Pilot Duty Cycle / EVSE Signaling Error
Charger displays E18 and the vehicle repeatedly connects and disconnects every few seconds.
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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 on main control board, Noise or interference on pilot line, Faulty pilot resistor network in J1772 handle, Poor connection at pilot terminal on control board
How to Fix / Troubleshooting
Safety first: Turn off power before opening the charger or handling internal wiring.
- Step 1 – Test with another vehicle: If possible, connect a different EV to see if the behavior is the same. This helps distinguish charger vs. vehicle issues.
- Step 2 – Inspect cable and handle: Look for damage to the "Electrify Home" cable and handle. If the handle has been dropped or run over, internal pilot components may be damaged.
- Step 3 – Reseat pilot connector: With power OFF and cover removed, locate the pilot wire connection on the main control board and ensure it is secure.
- Step 4 – Avoid EMI sources: Ensure the charger cable is not tightly bundled with high‑frequency or large motor cables that could inject noise into the pilot line.
- Step 5 – Replace cable or board: If E18 persists, the pilot resistor network in the handle or the pilot driver on the main board may be defective and require replacement.
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Repair Difficulty
Hard
4/5
Required Part
J1772 Charge Cable and Handle Assembly
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