Charger shows E20; vehicle does not detect charging station; no relay click

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.

Possible Causes

Faulty state detection firmware, Incorrect reading of CP voltage levels, Internal reference voltage error on PCB, Damaged CP sensing resistor network

Note: This is an internal logic fault; user actions are limited.

Power cycle: Turn off the charger at the breaker for 2 minutes, then restore power.
Test with another vehicle: If possible, connect a different EV to rule out a vehicle-side issue.
Firmware update: Update the charger firmware to the latest version.
Technician diagnostics: A technician should measure CP voltages in different states and compare to Mini specifications. If readings are incorrect, replace the main PCB.

Do not attempt to alter internal reference circuits.

Hard 4/5

Mini EV Charger Main Control Board

Check Price on Amazon

We may earn a commission from links on this page.