Nissan Overheating Connector / High Contact Resistance

Nissan home charger or connector becomes excessively hot to the touch during charging, though charging may continue.

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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

Worn or contaminated contacts in Nissan J1772 connector, Loose line terminals inside EVSE, Undersized or damaged supply conductors, Prolonged operation at maximum current in high ambient temperature

How to Fix / Troubleshooting

Safety first: If the connector or EVSE housing is too hot to touch comfortably, stop charging and turn OFF the breaker.

  • Inspect connector: Look for discoloration, melted plastic, or deformation around the pins. Replace the connector/cable if any damage is found.
  • Clean contacts: Lightly blow out dust; do not use abrasives or liquids on the pins.
  • Check internal terminations: With power OFF, open the EVSE and tighten all line and load terminals to the specified torque.
  • Reduce current: If your Nissan charger allows current setting, temporarily reduce the maximum current and monitor temperature.

Persistent overheating indicates a failing connector or poor wiring and should be corrected promptly to avoid fire risk.

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Repair Difficulty

Hard 4/5

Required Part

Nissan EVSE Charge Cable Assembly
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