CC family
CC_a010_contactorWelded
Unable to charge - Wall Connector issue
What does the CC_a010_contactorWelded alert mean?
Contactor detected as closed when it should be open.
What you'll see in your Tesla
- Unable to charge - Wall Connector issue
- Wall Connector needs service
What triggers it
Wall connector detects voltage on the contactor output when it should be open.
When it clears
User resets by cycling cable, reset button, or power cycle.
Potential impact
Wall connector will not operate and there is a potential hazardous voltage present on the charge handle.
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.