Leviton Inaccurate Internal Metering

Charger’s energy usage readings in the app are clearly inaccurate (too high or too low) compared to vehicle data.

Advertisements

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.

Advertisements

Possible Causes

Loose or misoriented current transformers, Calibration drift in metering IC, Firmware bug in energy calculation, Partial conductor bypassing CT

How to Fix / Troubleshooting

Safety first: Turn OFF power at the breaker before accessing internal wiring.

Steps:

  • 1. Compare over time: Verify discrepancies over several charge sessions to rule out one-time anomalies.
  • 2. Inspect CTs (qualified person): With cover removed and power OFF, ensure all output conductors pass through the CTs as designed and that CTs are oriented correctly.
  • 3. Firmware update: Apply any firmware updates that address metering accuracy.
  • 4. Replace CTs or board: If physical installation is correct and firmware is current, replace the CT set or main control board as needed.
Advertisements

Repair Difficulty

Hard 4/5

Required Part

Leviton EVSE Current Transformer Set
Check Price on Amazon

We may earn a commission from links on this page.

Advertisements