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Tesla CC_a023

Unable to charge - Too many Wall Connectors Ensure no more than 3 units paired with primary

Common search variants: CCa023 · CC-a023 · CC a023 · Search ignores case and common separators.

DriveNot yet established by verified evidence.
ChargeNo. The verified alert states that charging is unavailable until the Wall Connector load-sharing configuration is addressed.
ServiceTesla documentation directs the owner to consult an electrician. Tesla vehicle service requirements are not yet established by verified evidence.
Confidence95%

Quick answer

CC_a023 means the Tesla has detected more than three Wall Connectors paired with the same primary Wall Connector in a load-sharing (circuit-breaker-sharing) network. The alert states that charging is unavailable.

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_a023 mean?

CC_a023 means the Tesla has detected more than three Wall Connectors paired with the same primary Wall Connector in a load-sharing (circuit-breaker-sharing) network. The alert states that charging is unavailable.

2. Technical explanation

Verified Tesla owner-manual material filed with NHTSA describes CC_a023 as a Wall Connector load-sharing configuration condition: more than three Wall Connectors are paired with one primary unit. The specified limit is no more than three paired Wall Connectors per primary unit.

3. What system is affected?

Tesla Wall Connector load-sharing (circuit-breaker-sharing) network.

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • The vehicle displays CC_a023: “Unable to charge - Too many Wall Connectors Ensure no more than 3 units paired with primary.”
  • Charging is unavailable, as stated in the alert title.

6. Possible causes

  • More than three Wall Connectors are paired with the same primary unit in a load-sharing network.

7. Can I still drive the vehicle?

Not yet established by verified evidence.

8. Can I charge the vehicle?

No. The verified alert states that charging is unavailable until the Wall Connector load-sharing configuration is addressed.

9. What you can safely do

  • Consult an electrician.
  • Use the Wall Connector installation guide as referenced by Tesla documentation.
  • Do not attempt electrical or Wall Connector reconfiguration unless qualified to do so.

10. Step-by-step troubleshooting

  1. Have an electrician verify the number of Wall Connectors paired with the same primary unit.
  2. Have an electrician move one or more paired Wall Connectors to a different circuit and disconnect them from the primary unit, as stated in the Tesla documentation.
  3. Confirm that no more than three Wall Connectors remain paired with a primary unit.

11. When to contact service

Tesla documentation directs the owner to consult an electrician. Tesla vehicle service requirements are not yet established by verified evidence.

12. What the service center may check

  • Confirm the Wall Connector load-sharing network does not have more than three paired units linked to the same primary.
  • Confirm any Wall Connectors moved to another circuit are disconnected from the original primary unit.
  • Refer to the applicable Wall Connector installation guide.

13. Possible repair or resolution

  • An electrician moves one or more paired Wall Connectors to a different circuit and disconnects them from the primary unit so that no more than three units are paired with that primary.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA manufacturer communications containing Tesla owner-manual guidance document CC_a023, including NHTSA communication 10250484 (published 2023-12-01): https://static.nhtsa.gov/odi/tsbs/2023/MC-10250484-9999.pdf
  • Additional verified NHTSA manufacturer communications repeat the same owner-manual guidance; the supplied evidence does not establish a distinct repair bulletin for this alert.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Official NHTSA-hosted Tesla manufacturer communication: https://static.nhtsa.gov/odi/tsbs/2023/MC-10250484-9999.pdf

19. Frequently asked questions

What does Tesla alert CC_a023 mean?

It means more than three Wall Connectors are paired with the same primary Wall Connector in a load-sharing network.

What should be done for CC_a023?

Tesla documentation says to consult an electrician to move one or more paired Wall Connectors to a different circuit and disconnect them from the primary unit.

Can I continue charging with CC_a023 displayed?

No. The alert states that charging is unavailable.

Can I drive with CC_a023?

Not yet established by verified evidence.

20. Sources & verification

Accepted ResearchVerified
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Tesla CC_a023: Unable to charge - Too many Wall Connectors Ensure no… | EV Diagnostics