CC family
CC_a021_CB_noMaster
Unable to charge - No primary Wall Connector
What does the CC_a021_CB_noMaster alert mean?
Wall connector is configured as a slave, but no master was detected.
What you'll see in your Tesla
- Unable to charge - No primary Wall Connector
- Check that primary unit is powered and available
What triggers it
Wall connector is configured as a slave, but no master is present on the sharing network.
When it clears
Wall connector is reconfigured or a master becomes present on the sharing network.
Potential impact
Wall connector will not operate.
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
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