CC family
CC_a001_gndMonIntrptLineSide
Unable to charge - Insufficient grounding
What does the CC_a001_gndMonIntrptLineSide alert mean?
Wall connector protective earth is disconnected or grounding scheme dual in-line package (DIP) switch is set incorrectly.
What you'll see in your Tesla
- Unable to charge - Insufficient grounding
- Proper wiring or outlet grounding must be verified
What triggers it
Wall connector alternating current (AC) input side ground impedance is above threshold.
When it clears
Wall connector AC input side ground impedance has fallen below threshold for adequate time.
Potential impact
Wall connector will not allow charging until the protective earth connection is corrected.
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
Track your Tesla's alerts automatically
Alerts like this reach MyTeslaMate through your car's Tesla telemetry API. MyTeslaMate logs every alert your Tesla reports and turns it into readable history and real-time notifications — hosted TeslaMate with no server to run.