E13
Splitvolt
Current Mismatch / Derating Error
Splitvolt EV charger shows E13 and charging is limited or stopped; may occur when the vehicle requests more current than the charger or circuit can provide.
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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
Incorrect maximum current configuration in charger, Faulty current sensing calibration, Vehicle requesting unsupported current level, Control board firmware bug
How to Fix / Troubleshooting
Safety first: Do not attempt to modify internal current sensors or bypass protections.
- Verify charger rating: Check the nameplate on the Splitvolt charger for its maximum output current (e.g., 24A, 32A, 40A).
- Adjust current setting: If your model allows, set the maximum current to match the circuit breaker rating (80% rule) and within the charger's rating.
- Test with another EV: Some vehicles may have communication quirks. If another EV charges normally, consult your vehicle manufacturer.
- Firmware update: If available, update the charger firmware to the latest version to correct possible current control bugs.
- Persistent E13: Indicates a likely calibration or sensor fault on the control board. Professional service is required.
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Repair Difficulty
Hard
4/5
Required Part
Current Sensing Circuit
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