Leviton Intermittent Charge Interruption

Charger intermittently stops charging mid-session without any visible error; charging resumes after unplugging and replugging.

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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

Loose J1772 connector latch, Weak contact tension on connector pins, Intermittent pilot or proximity wiring in cable, Marginal branch circuit causing voltage dips

How to Fix / Troubleshooting

Safety first: Avoid wiggling the connector under load. Turn OFF power before inspecting wiring.

Steps:

  • 1. Observe connector fit: During a charge, gently (without force) touch the handle to see if slight movement causes interruption. If so, the connector may be worn.
  • 2. Inspect latch and pins: Ensure the latch fully engages and that pins are straight and clean.
  • 3. Check cable strain relief: Look for movement of the cable where it enters the EVSE housing; internal conductors may be flexing and breaking.
  • 4. Monitor voltage (electrician): Have an electrician check for voltage sag on the branch circuit during charging. Correct any undersized wiring or loose connections.
  • 5. Replace worn components: If mechanical wear is evident, replace the Leviton cable/connector assembly.
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Repair Difficulty

Medium 3/5

Required Part

Leviton EVSE Charge Cable and J1772 Connector Assembly
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