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Tesla CC_a003

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

Common search variants: CCa003 · CC-a003 · CC a003 · 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. Whether charging with other equipment is available is not yet established by verified evidence.
ServiceIf CC_a003 persists after the documented reconnect and circuit-breaker reset, consult an electrician or contact Tesla.
Confidence95%

Quick answer

CC_a003 means the Tesla Wall Connector detected a ground fault and its GFCI protection tripped, so charging could not continue. Disconnect the Wall Connector from the vehicle and reconnect it. If the alert persists, Tesla directs users to consult an electrician or contact Tesla.

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_a003 mean?

CC_a003 means the Tesla Wall Connector detected a ground fault and its GFCI protection tripped, so charging could not continue. Disconnect the Wall Connector from the vehicle and reconnect it. If the alert persists, Tesla directs users to consult an electrician or contact Tesla.

2. Technical explanation

Tesla describes this alert as a ground fault: current is leaking through an unsafe path. The verified owner-manual evidence identifies possible line-to-ground or neutral-to-ground faults. The alert is specifically associated with Wall Connector charging equipment and indicates that charging is unavailable through that equipment at that time.

3. What system is affected?

Tesla Wall Connector charging equipment and its ground-fault circuit interrupter (GFCI) protection.

4. How serious is this code?

The database severity is unknown. Verified evidence establishes a ground-fault condition and an inability to charge with the affected Wall Connector; it does not provide a severity classification.

5. Symptoms you may notice

  • Tesla displays CC_a003: “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. Whether charging with other equipment is available 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, turn OFF the circuit breaker servicing the Wall Connector, wait 10 seconds, turn it ON again, then reconnect the Wall Connector to the vehicle.
  • If the issue continues, consult an electrician or contact Tesla.
  • Refer to the installation guide for the Wall Connector.

10. Step-by-step troubleshooting

  1. Try charging again after disconnecting and reconnecting the Wall Connector.
  2. If the alert remains, perform the documented Wall Connector supply-circuit breaker reset: OFF for 10 seconds, then ON, followed by reconnection.
  3. Do not attempt electrical or high-voltage repairs. Persistent ground-fault alerts should be addressed by an electrician or Tesla.

11. When to contact service

If CC_a003 persists after the documented reconnect and circuit-breaker reset, consult an electrician or contact Tesla.

12. What the service center may check

  • An electrician or Tesla can evaluate the persistent ground-fault condition. Specific diagnostic checks are not established by the verified evidence provided.

13. Possible repair or resolution

  • Not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Official NHTSA-hosted Tesla owner-manual/manufacturer communications document CC_a003 and its recommended actions, including NHTSA Manufacturer Communication PDFs 10250480, 10250484, 10250485, 10240947, and 10238117. These documents describe the alert as a ground fault and direct reconnection, a Wall Connector circuit-breaker reset if needed, and consultation with an electrician or Tesla if the issue persists.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified official information is available through NHTSA-hosted Tesla manufacturer communications, including https://static.nhtsa.gov/odi/tsbs/2023/MC-10250480-9999.pdf and https://static.nhtsa.gov/odi/tsbs/2024/MC-10253666-9999.pdf.

19. Frequently asked questions

What does Tesla alert CC_a003 mean?

It means the Wall Connector GFCI tripped because a ground fault was detected. Tesla describes the condition as current leaking through an unsafe path.

What should I do first?

Disconnect the Wall Connector from the vehicle, reconnect it, and try charging again.

What if reconnecting does not clear CC_a003?

Tesla’s documented next step is to turn OFF the circuit breaker servicing the Wall Connector, wait 10 seconds, turn it ON again, and reconnect the Wall Connector to the vehicle. If the issue persists, consult an electrician or contact Tesla.

Can I drive with CC_a003?

Not yet established by verified evidence.

20. Sources & verification

Accepted ResearchVerified
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Tesla CC_a003: Unable to charge - Wall Connector GFCI tripped… | EV Diagnostics