E10
Leviton Internal Metering / Current Sensor Fault

Charger indicates E10 or a metering error; energy usage data may be unavailable and charging may be limited or disabled.

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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

Failed current transformer (CT) on output conductors, Loose CT harness connection to control board, Faulty metering IC on main PCB, Incorrect CT orientation after service

How to Fix / Troubleshooting

Safety first: De-energize the EVSE at the breaker. Current sensors are around high-current conductors; do not work near them when energized.

Steps:

  • 1. Power cycle: Turn breaker OFF for several minutes, then ON. Check if E10 clears.
  • 2. Inspect CT connections (qualified person): With cover removed and power OFF, locate the current transformers (ring-shaped sensors) around the output wires. Ensure their connectors are firmly plugged into the main control board.
  • 3. Check for physical damage: Look for cracked CT housings or cut sensor wires. Any damage requires CT replacement.
  • 4. Orientation: If the unit was recently serviced, verify CTs are installed in the correct direction as indicated by arrows or markings per Leviton documentation.
  • 5. Board fault: If CTs and wiring are intact but E10 persists, the metering circuitry on the main board may be defective and the board will need replacement.
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Repair Difficulty

Hard 4/5

Required Part

Leviton EVSE Current Transformer Set
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