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Tesla CP_a058

Unable to AC charge - Unplug and retry Or try DC Fast Charging / Supercharging

Common search variants: CPa058 · CP-a058 · CP a058 · Search ignores case and common separators.

DriveNot yet established by verified evidence. The supplied alert documentation addresses AC charging capability, not driving capability.
ChargeAC charging is unavailable when this alert is active. Tesla’s alert text says to unplug and retry or try DC fast charging/Supercharging; successful DC charging in an individual case is not guaranteed by the supplied evidence.
ServiceService requirement is listed as unknown in the diagnostic record. If the alert persists after the documented unplug-and-retry action, further service guidance is not yet established by verified evidence.
Confidence95%

Quick answer

CP_a058 means the Tesla has been unable to AC charge after too many unsuccessful attempts. Tesla’s documented message directs the owner to unplug and retry, or to try DC fast charging/Supercharging.

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 CP_a058 mean?

CP_a058 means the Tesla has been unable to AC charge after too many unsuccessful attempts. Tesla’s documented message directs the owner to unplug and retry, or to try DC fast charging/Supercharging.

2. Technical explanation

Verified Tesla owner-manual evidence states that this alert occurs when the vehicle cannot AC charge because it detected one of the applicable conditions and tried to charge too many times without success. The supplied evidence specifically identifies a charge-port detection condition: the charge port may be unable to detect whether a charge cable is inserted or to detect the cable type. The complete set of conditions is not available in the supplied excerpts, so additional causes are not yet established by verified evidence.

3. What system is affected?

AC charging and charge-port cable detection.

4. How serious is this code?

The diagnostic record lists severity as unknown. The practical impact established by the alert is inability to AC charge.

5. Symptoms you may notice

  • The vehicle displays CP_a058: “Unable to AC charge - Unplug and retry Or try DC Fast Charging / Supercharging.”
  • AC charging is unsuccessful after repeated attempts.
  • The charge port may be unable to detect whether a charge cable is inserted or identify the cable type.

6. Possible causes

  • The vehicle has detected an AC-charging-related condition and has made too many unsuccessful charging attempts.
  • The charge port is unable to detect whether a charge cable is inserted or detect the type of charge cable.
  • Additional causes are not yet established by verified evidence.

7. Can I still drive the vehicle?

Not yet established by verified evidence. The supplied alert documentation addresses AC charging capability, not driving capability.

8. Can I charge the vehicle?

AC charging is unavailable when this alert is active. Tesla’s alert text says to unplug and retry or try DC fast charging/Supercharging; successful DC charging in an individual case is not guaranteed by the supplied evidence.

9. What you can safely do

  • Stop charging before disconnecting the charge cable.
  • Unplug the charge cable and retry AC charging.
  • Try DC fast charging/Supercharging, as stated in the alert.
  • Charging can be stopped from the vehicle touchscreen, Tesla Mobile App, charging station, or, with some external charging equipment, by pressing the button on the charge handle.

10. Step-by-step troubleshooting

  1. Stop charging before disconnecting the cable, then unplug and retry AC charging.
  2. If AC charging remains unavailable, try DC fast charging/Supercharging as directed by the alert.
  3. Do not attempt high-voltage diagnosis or repair. Further owner-level troubleshooting steps are not yet established by verified evidence.

11. When to contact service

Service requirement is listed as unknown in the diagnostic record. If the alert persists after the documented unplug-and-retry action, further service guidance is not yet established by verified evidence.

12. What the service center may check

  • Not yet established by verified evidence.

13. Possible repair or resolution

  • Not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA manufacturer communication / Tesla owner documentation, MC-10250484-9999 (published 2023-12-01): documents CP_a058 and states that the vehicle is unable to AC charge after too many unsuccessful attempts; it includes charge-port cable-detection conditions and the unplug/retry or DC fast charging/Supercharging direction.
  • Additional supplied NHTSA manufacturer communications repeat this owner-documentation alert across Tesla manuals. 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 documentation: https://static.nhtsa.gov/odi/tsbs/2023/MC-10250484-9999.pdf

19. Frequently asked questions

What does Tesla alert CP_a058 mean?

It means the vehicle is unable to AC charge after detecting a charging-related condition and making too many unsuccessful charging attempts.

What should I do when CP_a058 appears?

Tesla’s documented direction is to stop charging before disconnecting, unplug and retry, or try DC fast charging/Supercharging.

Does CP_a058 confirm a failed part?

No. The supplied evidence identifies an AC charging/charge-port detection issue but does not establish a failed component or repair.

Can I still drive with CP_a058?

Not yet established by verified evidence.

20. Sources & verification

Accepted ResearchVerified
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Tesla CP_a058: Unable to AC charge - Unplug and retry Or try DC Fast… | EV Diagnostics