Tesla Alert CC_a001 Unable to charge - Insufficient grounding with Wall Connector

The CC_a001 error code may be triggered when charging with the Wall Connector.

What this alert means: No ground connection detected in the Wall Connector.

It manifests as a failure to charge, specifically indicating that the Wall Connector cannot verify a stable protective earth connection. To confirm this symptom, observe the unit's status light pattern and the error message provided on the vehicle's dashboard or Tesla app. Attempt a power cycle by turning off the dedicated circuit breaker for 30 seconds and turning it back on; if the error persists immediately upon reconnection, the unit is actively rejecting the ground connection.


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Diagnostic Document

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Automotive - Electric Vehicles

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ID: GEmsXj5uzE9gjKlHAcrJ
Created: 7/15/2026, 1:19:49 PM
Edited: Pedro (admin), 7/15/2026, 1:24:32 PM
Version: 3
Status: Not Verified
Marked True: -1
Views: 1

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