Enphase
General EVSE–Vehicle Handshake Failure
Charger powers on but vehicle will not charge; no error code shown on charger or app, vehicle just reports 'charging stopped' or 'not charging'.
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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
Dirty or damaged J1772 pins, Weak pilot signal due to cable damage, Vehicle inlet contamination, Incompatible or outdated vehicle firmware
How to Fix / Troubleshooting
Safety: Turn OFF the charger breaker before cleaning or closely inspecting connectors.
- Inspect J1772 connector: Check all pins for discoloration, pitting, or bending. Clean gently with a dry, soft brush. Do not use solvents or sprays.
- Inspect vehicle inlet: Look into the vehicle charge port for debris, insects, or corrosion. Clean per vehicle manufacturer's instructions.
- Try another EVSE: Test the vehicle at a public charger. If it also fails, the issue is likely with the vehicle.
- Try another vehicle: If another EV charges fine on your Enphase unit, contact your vehicle dealer for diagnostics.
- If multiple vehicles fail on this charger: The pilot or proximity circuits in the Enphase cable or control board may be degraded. Schedule service to test and replace the cable assembly or board.
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Repair Difficulty
Medium
3/5
Required Part
Enphase EVSE Charge Cable and Pilot/Proximity Circuit
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