EV Diagnostics
Verified EV diagnostic knowledge page

Tesla CC_a017

Unable to charge - Vehicle connection issue Insert charge handle fully into charge port

Common search variants: CCa017 · CC-a017 · CC a017 · Search ignores case and common separators.

DriveNot yet established by verified evidence. The supplied diagnostic record lists safe-to-drive as unknown.
ChargeNot yet established by verified evidence. The alert itself states that charging is unable to proceed; Tesla’s documented steps include reconnecting and, if available, trying other charging equipment.
ServiceContact Tesla service if CC_a017 persists. The verified owner-manual evidence explicitly states that service is required when the issue persists.
Confidence95%

Quick answer

CC_a017 means the Tesla detected a communication error between the Wall Connector and the vehicle. Reconnect the charge handle fully into the charge port and try charging again. If the alert persists, verified owner-manual evidence says service is required.

This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.

Video guides

Watch Videos

Relevant videos play here without leaving this diagnostic page.

No sufficiently relevant embeddable video has been accepted for this diagnostic yet.

Videos are supporting material and never override OEM or regulator evidence.

1. What does CC_a017 mean?

CC_a017 means the Tesla detected a communication error between the Wall Connector and the vehicle. Reconnect the charge handle fully into the charge port and try charging again. If the alert persists, verified owner-manual evidence says service is required.

2. Technical explanation

Tesla’s documented meaning for CC_a017 is: “Unable to charge - Vehicle connection issue Insert charge handle fully into charge port.” The official owner-manual material submitted through NHTSA states that a communication error occurred between the Wall Connector and the vehicle. This alert concerns the charging connection and charging communication; verified evidence does not establish a vehicle mechanical or driving-system fault.

3. What system is affected?

Charging connection and communication between the Tesla vehicle and a Wall Connector.

4. How serious is this code?

Not yet established by verified evidence. The supplied diagnostic record lists severity as unknown.

5. Symptoms you may notice

  • The vehicle displays CC_a017: “Unable to charge - Vehicle connection issue Insert charge handle fully into charge port.”
  • Charging is unable to proceed when the communication error between the Wall Connector and vehicle occurs.

6. Possible causes

  • A communication error occurred between the Wall Connector and the vehicle.
  • Not yet established by verified evidence whether a specific vehicle component, charge handle, Wall Connector component, wiring condition, or other condition is the underlying cause.

7. Can I still drive the vehicle?

Not yet established by verified evidence. The supplied diagnostic record lists safe-to-drive as unknown.

8. Can I charge the vehicle?

Not yet established by verified evidence. The alert itself states that charging is unable to proceed; Tesla’s documented steps include reconnecting and, if available, trying other charging equipment.

9. What you can safely do

  • Disconnect the Wall Connector from the vehicle, then reconnect it and try charging again, ensuring the charge handle is fully inserted into the charge port.
  • If the issue persists, Tesla’s owner-manual guidance says to turn OFF the circuit breaker servicing the Wall Connector, wait, and then turn it back ON before trying again.
  • If other charging equipment is available, connect the vehicle to another Wall Connector or a Mobile Connector to determine whether the vehicle can communicate with other charging equipment.
  • If the issue persists, arrange service.
  • For Wall Connector-related information, consult the Wall Connector installation guide.

10. Step-by-step troubleshooting

  1. Reconnect the Wall Connector to the vehicle and try charging again.
  2. If the issue continues, power-cycle the Wall Connector using its servicing circuit breaker as directed in Tesla’s owner-manual guidance.
  3. If available, test communication using another Wall Connector or a Mobile Connector.
  4. If CC_a017 continues after these steps, service is required according to the verified Tesla owner-manual material.

11. When to contact service

Contact Tesla service if CC_a017 persists. The verified owner-manual evidence explicitly states that service is required when the issue persists.

12. What the service center may check

  • Confirm the reported charging communication concern and determine whether the alert persists after the documented reconnection attempt.
  • Determine whether the vehicle can communicate with another Wall Connector or a Mobile Connector, if such equipment is available.
  • Not yet established by verified evidence which additional diagnostic procedures or component inspections Tesla service performs.

13. Possible repair or resolution

  • Not yet established by verified evidence. The provided sources direct the owner to service if the issue persists but do not identify a specific repair or replacement.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Official NHTSA-hosted Tesla manufacturer communications include owner-manual material documenting CC_a017 and its recommended actions. Example: NHTSA Manufacturer Communication PDF 10250484, published December 1, 2023: https://static.nhtsa.gov/odi/tsbs/2023/MC-10250484-9999.pdf
  • Additional official NHTSA-hosted documentation includes NHTSA Manufacturer Communication PDF 10253666, published March 27, 2024: https://static.nhtsa.gov/odi/tsbs/2024/MC-10253666-9999.pdf

16. Recall information

  • Not yet established by verified evidence. No recall information was supplied for CC_a017.

17. Official manufacturer information

Official NHTSA-hosted Tesla documentation describes CC_a017 as a Wall Connector-to-vehicle communication error and provides reconnection, Wall Connector power-cycle, alternate-equipment, and service guidance. Source: https://static.nhtsa.gov/odi/tsbs/2023/MC-10250484-9999.pdf

19. Frequently asked questions

What does Tesla alert CC_a017 mean?

It means the vehicle was unable to charge because a communication error occurred between the Wall Connector and the vehicle. The alert instructs the user to insert the charge handle fully into the charge port.

What should I do first for CC_a017?

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

Can I try another charger?

Yes. Tesla’s documented guidance says that if other equipment is available, use another Wall Connector or a Mobile Connector to determine whether the vehicle can communicate with other charging equipment.

When is service required?

Tesla’s documented guidance says service is required if the issue persists.

Is it safe to drive with CC_a017?

Not yet established by verified evidence. The supplied record lists safe-to-drive as unknown.

20. Sources & verification

Accepted ResearchVerified
Show all 58 verified sources
Tesla CC_a017: Unable to charge - Vehicle connection issue Insert… | EV Diagnostics