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Diagnostic Case Summary

Tesla alert CC_a001 when charging with Wall Connector

In progress

Automotive - Electric Vehicles · Started Sep 9, 2026 · by Pedro

Diagnostics

Charging Issues with Tesla Wall Connector
Confirmed
Improper Facility Grounding where the Wall Connector is Installed causes Tesla Alert CC_a001
Confirmed
Tesla Alert CC_a001 Unable to charge - Insufficient grounding with Wall Connector
Confirmed
Tesla Wall Connector Blinking Red 2 Times
Confirmed
Wall Connector Loose or Damaged Wiring causes Tesla Alert CC_a001
Confirmed
Tesla Alert CC_a004 Unable to charge - Wall Connector hardware issue
Ruled out
Tesla Wall Connector Blinking 5 Times
Ruled out

Diagnostics and Remedies considered but not confirmed

Repair the Facility Grounding System
Remedy considered
Resolve Wall Connector Grounding Faults via Professional Electrician
Remedy considered
Tesla CC_a001 Due to Incorrect Wall Connector DIP Switch Settings
Diagnostic considered