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Tesla CC_a005

Unable to charge - Wall Connector GFCI tripped Disconnect and retry or use different equipment

Common search variants: CCa005 · CC-a005 · CC a005 · Search ignores case and common separators.

DriveNot yet established by verified evidence.
ChargeCharging through the affected Wall Connector is unavailable when this alert is present. Tesla directs the owner to retry after disconnecting and reconnecting, or to use different equipment. Whether charging is available with every alternative charging method is not yet established by verified evidence.
ServiceContact Wall Connector service if the issue persists. Tesla’s published information states that a persistent condition requires Wall Connector service; refer to its installation guide for further information.
Confidence95%

Quick answer

Tesla alert CC_a005 means charging could not proceed because the Wall Connector GFCI tripped. Tesla’s published description identifies a ground fault and instructs the owner to disconnect and reconnect the Wall Connector, or use different charging equipment.

This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.

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1. What does CC_a005 mean?

Tesla alert CC_a005 means charging could not proceed because the Wall Connector GFCI tripped. Tesla’s published description identifies a ground fault and instructs the owner to disconnect and reconnect the Wall Connector, or use different charging equipment.

2. Technical explanation

Tesla describes this alert as a ground fault: current is leaking through an unsafe path. The published information identifies possible line-to-ground or neutral-to-ground fault conditions. The alert is associated with the Wall Connector and its GFCI protection, rather than establishing a fault in a particular vehicle component.

3. What system is affected?

Tesla Wall Connector charging equipment and its GFCI protection.

4. How serious is this code?

The database severity is unknown. However, the verified Tesla information describes a ground fault and instructs use of different equipment if the condition persists.

5. Symptoms you may notice

  • The vehicle displays CC_a005: “Unable to charge - Wall Connector GFCI tripped.”
  • Charging is unavailable through the affected Wall Connector.

6. Possible causes

  • Ground fault.
  • Current leaking through an unsafe path.
  • Possible line-to-ground fault.
  • Possible neutral-to-ground fault.

7. Can I still drive the vehicle?

Not yet established by verified evidence.

8. Can I charge the vehicle?

Charging through the affected Wall Connector is unavailable when this alert is present. Tesla directs the owner to retry after disconnecting and reconnecting, or to use different equipment. Whether charging is available with every alternative charging method is not yet established by verified evidence.

9. What you can safely do

  • Disconnect the Wall Connector from the vehicle and reconnect it, then try charging again.
  • If the issue persists, use different charging equipment.
  • Refer to the installation guide for the Wall Connector if the condition persists.
  • Do not perform electrical or high-voltage repair work yourself.

10. Step-by-step troubleshooting

  1. Retry charging by disconnecting the Wall Connector from the vehicle and reconnecting it.
  2. If the alert persists, use different equipment.
  3. If the condition persists at the Wall Connector, Tesla’s published information states that the Wall Connector requires service.

11. When to contact service

Contact Wall Connector service if the issue persists. Tesla’s published information states that a persistent condition requires Wall Connector service; refer to its installation guide for further information.

12. What the service center may check

  • A qualified electrician may need to complete work in accordance with the Wall Connector Installation Manual before power is restored, as described in the verified Tesla material.
  • After the electrician’s work is complete and power is restored, reconnect the Wall Connector to the vehicle and retry charging.
  • The specific diagnostic tests and component-level repair procedure are not yet established by verified evidence.

13. Possible repair or resolution

  • If the issue persists, the verified Tesla information states that the Wall Connector requires service.
  • Specific repaired or replaced parts are not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA manufacturer communications reproduce Tesla owner-manual information for CC_a005, including NHTSA communication 10250484 (published December 1, 2023): https://static.nhtsa.gov/odi/tsbs/2023/MC-10250484-9999.pdf
  • Additional verified NHTSA manufacturer communications include 10253666 (published March 27, 2024): https://static.nhtsa.gov/odi/tsbs/2024/MC-10253666-9999.pdf

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified official NHTSA-hosted Tesla material describes CC_a005 as a Wall Connector GFCI-trip alert caused by a ground fault, with possible line-to-ground or neutral-to-ground fault conditions. Source: https://static.nhtsa.gov/odi/tsbs/2023/MC-10250484-9999.pdf

19. Frequently asked questions

What does Tesla CC_a005 mean?

It means the Wall Connector GFCI tripped and charging could not proceed. Tesla describes the condition as a ground fault.

What should I do first?

Tesla instructs you to disconnect the Wall Connector from the vehicle, reconnect it, and try charging again.

What if CC_a005 returns?

Tesla directs the owner to use different equipment. If the issue persists, Tesla states that the Wall Connector requires service.

Does CC_a005 prove there is a vehicle fault?

No. The verified material identifies the Wall Connector GFCI and describes possible line-to-ground or neutral-to-ground fault conditions; it does not establish a particular vehicle-component fault.

20. Sources & verification

Accepted ResearchVerified
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Tesla CC_a005: Unable to charge - Wall Connector GFCI tripped… | EV Diagnostics