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Tesla CC_a008

Unable to charge - Input voltage too low Voltage must be within Wall Connector rating

Common search variants: CCa008 · CC-a008 · CC a008 · Search ignores case and common separators.

DriveNot yet established by verified evidence.
ChargeThe alert states that charging is unavailable. Whether charging is possible with another charging source is not yet established by verified evidence.
ServiceTesla’s documented instruction is to consult an electrician. Whether Tesla service is required is not yet established by verified evidence.
Confidence95%

Quick answer

Tesla alert CC_a008 means charging is unavailable because the Wall Connector input voltage is too low and must be within the Wall Connector rating. Tesla’s documented action is to consult an electrician to ensure appropriate voltage at the circuit breaker serving the Wall Connector.

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_a008 mean?

Tesla alert CC_a008 means charging is unavailable because the Wall Connector input voltage is too low and must be within the Wall Connector rating. Tesla’s documented action is to consult an electrician to ensure appropriate voltage at the circuit breaker serving the Wall Connector.

2. Technical explanation

Tesla describes CC_a008 as an over- or under-voltage protection alert. The alert specifically identifies low input voltage at the Wall Connector; the supplied evidence does not establish a vehicle high-voltage battery fault.

3. What system is affected?

Wall Connector input-power supply and the circuit breaker serving the Wall Connector.

4. How serious is this code?

Severity is not assigned in the verified diagnostic record. Charging is unavailable while this alert is active.

5. Symptoms you may notice

  • The vehicle displays CC_a008: “Unable to charge - Input voltage too low. Voltage must be within Wall Connector rating.”
  • Charging is unavailable through the affected Wall Connector.

6. Possible causes

  • Input voltage at the Wall Connector is too low or otherwise outside the Wall Connector rating, causing over- or under-voltage protection.
  • Any more specific electrical cause is not yet established by verified evidence.

7. Can I still drive the vehicle?

Not yet established by verified evidence.

8. Can I charge the vehicle?

The alert states that charging is unavailable. Whether charging is possible with another charging source is not yet established by verified evidence.

9. What you can safely do

  • Consult an electrician to ensure appropriate voltage on the circuit breaker that serves the Wall Connector.
  • Refer to the installation guide for the Wall Connector.

10. Step-by-step troubleshooting

  1. Have an electrician assess whether the circuit breaker serving the Wall Connector has appropriate voltage.
  2. Use the Wall Connector installation guide as the applicable reference. Further owner-level troubleshooting steps are not yet established by verified evidence.

11. When to contact service

Tesla’s documented instruction is to consult an electrician. Whether Tesla service is required is not yet established by verified evidence.

12. What the service center may check

  • Verify appropriate voltage at the circuit breaker that serves the Wall Connector, following the Wall Connector installation guide.

13. Possible repair or resolution

  • Correct the Wall Connector supply condition so its input voltage is within the Wall Connector rating. The exact repair is not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA manufacturer communication MC-10250484-9999 (published December 1, 2023) documents CC_a008 as over- or under-voltage protection and directs owners to consult an electrician and the Wall Connector installation guide: https://static.nhtsa.gov/odi/tsbs/2023/MC-10250484-9999.pdf
  • Additional supplied NHTSA manufacturer communications repeat the same owner-manual guidance; no vehicle-specific repair procedure is established by the supplied evidence.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Official NHTSA-hosted Tesla manufacturer communications identify this alert as: “Unable to charge - Input voltage too low. Voltage must be within Wall Connector rating.” They state that it is an over- or under-voltage protection condition and direct consultation with an electrician regarding the circuit breaker serving the Wall Connector.

19. Frequently asked questions

What does Tesla CC_a008 mean?

It means charging is unavailable because the Wall Connector input voltage is too low and must be within the Wall Connector rating.

What should I do for CC_a008?

Consult an electrician to ensure appropriate voltage at the circuit breaker that serves the Wall Connector, and refer to the Wall Connector installation guide.

Is this confirmed to be a vehicle battery fault?

No. The supplied verified evidence identifies the Wall Connector input-power supply and its circuit breaker; it does not establish a vehicle high-voltage battery fault.

20. Sources & verification

Accepted ResearchVerified
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