Why is my EV charger showing a ground fault error – Advice from Electriman, North London Electricians

What Does a Ground Fault Error Mean on My EV Charger?

A ground fault (sometimes called an earth fault) means your EV charger has detected electricity flowing somewhere it shouldn't — specifically along an unintended path to earth. Your charger has a built-in safety system that monitors this constantly, and when it detects a problem, it shuts down charging to protect you, your vehicle, and your home's electrical installation.

This is a safety feature working correctly, not a random glitch — so it's important to take it seriously.

Common Causes a Homeowner Can Check Safely

Moisture or water ingress — rain, condensation, or a hosepipe near the charge point or vehicle inlet connector

Damaged charging cable — cuts, crushing damage, or a bent connector pin

Faulty vehicle inlet — inspect the socket on your car for debris, bent pins, or signs of moisture

Tripped RCD or RCBO — check your consumer unit (fuse board) to see if a circuit breaker has tripped

Temporary environmental cause — very cold or very damp weather can occasionally trigger false readings

What You Can Do

1. Unplug the charging cable from both the charger and the vehicle

2. Inspect the cable and connectors visually for damage, moisture, or debris

3. Allow everything to dry for several hours if damp conditions are suspected

4. Check your consumer unit — if an RCD or RCBO has tripped, reset it once only

Need a qualified electrician in North London?

Electriman covers Mill Hill, Barnet, Finchley, Edgware, Enfield, Watford and surrounding areas. All work is Part P certified and fully insured.