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Tesla CC_f028

Unable to charge - Incorrect switch setting Wall Connector rotary switch must be adjusted

Common search variants: CCf028 · CC-f028 · CC f028 · Search ignores case and common separators.

DriveNot yet established by verified evidence.
ChargeCharging is unavailable with the affected Wall Connector while CC_f028 is present. Whether charging is possible using another charging source is not yet established by verified evidence.
ServiceContact Wall Connector service if the issue persists after an electrician has adjusted the rotary switch according to the Wall Connector Installation Manual.
Confidence95%

Quick answer

CC_f028 means charging is unavailable because the Tesla Wall Connector has an incorrect internal rotary-switch setting. A qualified electrician should adjust it to a valid operating-current setting using the Wall Connector Installation Manual. If the issue continues afterward, the Wall Connector requires service.

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1. What does CC_f028 mean?

CC_f028 means charging is unavailable because the Tesla Wall Connector has an incorrect internal rotary-switch setting. A qualified electrician should adjust it to a valid operating-current setting using the Wall Connector Installation Manual. If the issue continues afterward, the Wall Connector requires service.

2. Technical explanation

Tesla documentation identifies CC_f028 as: “Unable to charge - Incorrect switch setting Wall Connector rotary switch must be adjusted.” The documented meaning is an incorrect rotary-switch setting in the Wall Connector. The documented correction is to have an electrician adjust the Wall Connector’s internal rotary switch to a valid operating-current setting. The electrician should first ensure that the Wall Connector has no power, then follow the Wall Connector Installation Manual. After work is complete and power is restored, reconnect the Wall Connector to the vehicle and try charging again. If the alert remains, Tesla documentation states that the Wall Connector requires service.

3. What system is affected?

Tesla Wall Connector charging equipment, specifically its internal rotary switch and operating-current configuration.

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • The vehicle displays alert CC_f028.
  • Charging is unavailable when using the affected Wall Connector.

6. Possible causes

  • Incorrect Wall Connector internal rotary-switch setting.

7. Can I still drive the vehicle?

Not yet established by verified evidence.

8. Can I charge the vehicle?

Charging is unavailable with the affected Wall Connector while CC_f028 is present. Whether charging is possible using another charging source is not yet established by verified evidence.

9. What you can safely do

  • Do not attempt internal Wall Connector work yourself.
  • Arrange for a qualified electrician to follow the Wall Connector Installation Manual.
  • After the electrician completes the work and restores power, reconnect the Wall Connector and try charging again.
  • If the issue persists, arrange Wall Connector service.

10. Step-by-step troubleshooting

  1. Have an electrician verify and adjust the Wall Connector’s internal rotary switch to a valid operating-current setting.
  2. The electrician should ensure the Wall Connector has no power before performing the adjustment.
  3. After power is restored, reconnect the Wall Connector to the vehicle and retry charging.
  4. If CC_f028 persists, the Wall Connector requires service.

11. When to contact service

Contact Wall Connector service if the issue persists after an electrician has adjusted the rotary switch according to the Wall Connector Installation Manual.

12. What the service center may check

  • Verify the Wall Connector internal rotary switch is set to a valid operating-current setting.
  • Follow the applicable Wall Connector Installation Manual.
  • Confirm whether CC_f028 remains after power has been restored and charging has been retried.

13. Possible repair or resolution

  • Adjustment of the Wall Connector’s internal rotary switch to a valid operating-current setting.
  • Wall Connector service if the issue persists after adjustment.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA Manufacturer Communication PDF 10253660: Index381, published March 26, 2024: https://static.nhtsa.gov/odi/tsbs/2024/MC-10253660-9999.pdf
  • NHTSA Manufacturer Communication PDF 10250483: ManualC, published December 1, 2023: https://static.nhtsa.gov/odi/tsbs/2023/MC-10250483-9999.pdf
  • NHTSA Manufacturer Communication PDF 10247842: ManualQ, published November 22, 2023: https://static.nhtsa.gov/odi/tsbs/2023/MC-10247842-9999.pdf
  • NHTSA Manufacturer Communication PDF 10240951: Owner's Manual, published June 9, 2023: https://static.nhtsa.gov/odi/tsbs/2023/MC-10240951-9999.pdf

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified NHTSA-hosted Tesla manufacturer communications describe CC_f028 as an incorrect Wall Connector rotary-switch setting and direct use of the Wall Connector Installation Manual. Sources include https://static.nhtsa.gov/odi/tsbs/2024/MC-10253660-9999.pdf and https://static.nhtsa.gov/odi/tsbs/2023/MC-10250483-9999.pdf. Verified applicability is Tesla Model 3 (2017–2023), Model S (2012–2023), and Model X (2016–2023) in the United States.

19. Frequently asked questions

What does Tesla alert CC_f028 mean?

It means the Wall Connector has an incorrect rotary-switch setting and charging is unavailable.

Can I adjust the Wall Connector rotary switch myself?

Tesla documentation directs an electrician to perform the adjustment and to ensure the Wall Connector has no power before work begins.

What if CC_f028 remains after the switch is adjusted?

Tesla documentation states that the Wall Connector requires service if the issue persists.

Which vehicles are verified as applicable?

Verified US applicability includes Tesla Model 3 model years 2017–2023, Model S model years 2012–2023, and Model X model years 2016–2023.

20. Sources & verification

Verified
Show all 24 verified sources
Tesla CC_f028: Unable to charge - Incorrect switch setting Wall… | EV Diagnostics