This is general guidance based on the ChargeX MREC standard. Actual charger behavior varies by manufacturer and firmware version. Always follow on-screen instructions and contact the charging network if you are unsure.
Critical
The DC charger's pre-charge isolation test detected a potential electrical fault in the cable or connection. The charger will not deliver power until this safety check passes.
What to do
- Unplug, wait 15 seconds, and reconnect
- Make sure the connector is dry and free of debris
- Try a different connector or charger
- If this happens repeatedly, report the charger to the network
Who's responsible?
- This is likely a charger hardware issue
- This may be a vehicle issue
Technical details
- Error code
- IsolationTestFailed
- Category
- Electrical
- Classification
- safety
- Source
- ChargeX MREC Standard (2023)
See this on the charger screen? Scan it.
Point your phone at the error and get instant help. Coming soon.
Related errors
Stuck at the charger? Open the app.
Step-by-step help for real charging problems. Log the experience. Free on iOS and Android.
Free to download · Available on iOS and Android