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Tesla CC_a022

Unable to charge - More than 1 primary unit Ensure only 1 Wall Connector is set as primary

Common search variants: CCa022 · CC-a022 · CC a022 · Search ignores case and common separators.

DriveNot yet established by verified evidence.
ChargeCharging is unavailable while CC_a022 is present, according to the alert meaning. Whether charging can proceed after the Wall Connector network configuration is corrected is not separately established by the supplied verified evidence.
ServiceThe verified guidance specifically recommends an electrician for confirmation of the Wall Connector configuration. Tesla service requirements are not yet established by verified evidence.
Confidence95%

Quick answer

CC_a022 means charging is unavailable because more than one Tesla Wall Connector in a load-sharing (circuit-breaker-sharing) network is configured as the primary unit. The network requires exactly one primary Wall Connector.

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1. What does CC_a022 mean?

CC_a022 means charging is unavailable because more than one Tesla Wall Connector in a load-sharing (circuit-breaker-sharing) network is configured as the primary unit. The network requires exactly one primary Wall Connector.

2. Technical explanation

Verified Tesla owner-manual material filed with NHTSA identifies this as a Wall Connector load-sharing configuration issue. In this network, one—and only one—Wall Connector must be set as primary. Wall Connectors linked to it must be set to paired position (position F).

3. What system is affected?

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

4. How serious is this code?

The diagnostic record lists severity as unknown. The verified evidence establishes an inability to charge, but does not establish a safety severity.

5. Symptoms you may notice

  • Charging is unavailable.
  • The vehicle displays CC_a022: “Unable to charge - More than 1 primary unit Ensure only 1 Wall Connector is set as primary.”

6. Possible causes

  • More than one Wall Connector in a load-sharing network is set to the primary configuration.

7. Can I still drive the vehicle?

Not yet established by verified evidence.

8. Can I charge the vehicle?

Charging is unavailable while CC_a022 is present, according to the alert meaning. Whether charging can proceed after the Wall Connector network configuration is corrected is not separately established by the supplied verified evidence.

9. What you can safely do

  • Have an electrician confirm that only one Wall Connector is configured as primary.
  • Have the electrician confirm that all other Wall Connectors linked to the primary unit are set to paired position (position F).
  • Refer to the installation guide for the applicable Wall Connector.

10. Step-by-step troubleshooting

  1. Do not attempt electrical installation or configuration work unless qualified to do so. The verified guidance directs owners to have an electrician confirm the Wall Connector settings.
  2. Confirm the load-sharing network has exactly one primary Wall Connector.
  3. Confirm every other Wall Connector linked to that primary unit is in paired position (position F).

11. When to contact service

The verified guidance specifically recommends an electrician for confirmation of the Wall Connector configuration. Tesla service requirements are not yet established by verified evidence.

12. What the service center may check

  • Verify that exactly one Wall Connector in the load-sharing network is set as primary.
  • Verify that every other Wall Connector linked to the primary unit is set to paired position (position F).
  • Use the applicable Wall Connector installation guide for configuration information.

13. Possible repair or resolution

  • Correct the load-sharing configuration so that only one Wall Connector is primary and all linked Wall Connectors are in paired position (position F).

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA manufacturer communication MC-10253666-9999 (published March 27, 2024): https://static.nhtsa.gov/odi/tsbs/2024/MC-10253666-9999.pdf
  • NHTSA manufacturer communication MC-10250484-9999 (published December 1, 2023): https://static.nhtsa.gov/odi/tsbs/2023/MC-10250484-9999.pdf
  • The supplied official NHTSA communications contain Tesla owner-manual guidance for CC_a022; they do not, in the supplied evidence, establish a vehicle repair campaign.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Official NHTSA-hosted Tesla communication: https://static.nhtsa.gov/odi/tsbs/2024/MC-10253666-9999.pdf

19. Frequently asked questions

What does Tesla alert CC_a022 mean?

It means the Wall Connector load-sharing network has more than one primary unit configured. Exactly one Wall Connector must be primary.

What configuration is required for the other Wall Connectors?

The verified guidance says all Wall Connectors linked to the primary unit must be set to paired position (position F).

Who should check the configuration?

Tesla’s verified guidance says to have an electrician confirm the Wall Connector configuration.

Can I drive with CC_a022?

Not yet established by verified evidence.

20. Sources & verification

Accepted ResearchVerified
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