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Tesla CP_a046

Charging equipment communication lost Check power source and charging equipment

Common search variants: CPa046 · CP-a046 · CP a046 · Search ignores case and common separators.

DriveNot yet established by verified evidence.
ChargeThe alert indicates that charging stopped. Whether charging can resume is not yet established by verified evidence.
ServiceTesla service need is not established by the verified diagnostic record. The supplied Tesla documentation says this alert does not typically indicate a vehicle issue; contact Tesla or the charging-equipment provider if the condition persists.
Confidence95%

Quick answer

Tesla alert CP_a046 means charging stopped because communication between the vehicle and the external charging equipment was interrupted. Tesla states that this alert is usually specific to the external charging equipment and power source and does not typically indicate a vehicle issue.

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1. What does CP_a046 mean?

Tesla alert CP_a046 means charging stopped because communication between the vehicle and the external charging equipment was interrupted. Tesla states that this alert is usually specific to the external charging equipment and power source and does not typically indicate a vehicle issue.

2. Technical explanation

CP_a046 is a Tesla charging alert: “Charging equipment communication lost—Check power source and charging equipment.” Verified owner-manual evidence states that charging stopped after communication between the vehicle and external charging equipment was interrupted. The supplied evidence does not establish a component-level vehicle fault.

3. What system is affected?

External charging equipment and its power source; communication between the Tesla vehicle and charging equipment.

4. How serious is this code?

Severity is not established by the verified diagnostic record.

5. Symptoms you may notice

  • Charging stopped.
  • The vehicle displays CP_a046: “Charging equipment communication lost—Check power source and charging equipment.”

6. Possible causes

  • Interrupted communication between the vehicle and the external charging equipment.
  • An issue specific to the external charging equipment or its power source is usually indicated, according to Tesla owner-manual evidence.
  • Specific underlying causes are 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 indicates that charging stopped. Whether charging can resume is not yet established by verified evidence.

9. What you can safely do

  • Check the power source and external charging equipment, as directed by the alert.
  • Use the applicable Tesla charging instructions in the vehicle’s owner documentation.
  • Do not attempt high-voltage repair work.

10. Step-by-step troubleshooting

  1. Review the external charging equipment and its power source, consistent with the alert message.
  2. Consult the Tesla owner manual section titled “Charging Instructions.”
  3. Further step-by-step troubleshooting is not yet established by verified evidence.

11. When to contact service

Tesla service need is not established by the verified diagnostic record. The supplied Tesla documentation says this alert does not typically indicate a vehicle issue; contact Tesla or the charging-equipment provider if the condition persists.

12. What the service center may check

  • Confirm whether the interruption is associated with the external charging equipment or its power source. More specific service checks are not yet established by verified evidence.

13. Possible repair or resolution

  • No vehicle repair or component replacement is established by the supplied verified evidence.
  • Resolution may involve the external charging equipment or power source; the exact corrective action is not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA manufacturer communication PDF 10250484 (published 2023-12-01): https://static.nhtsa.gov/odi/tsbs/2023/MC-10250484-9999.pdf. It documents the Tesla owner-manual explanation for CP_a046.
  • Additional supplied NHTSA manufacturer communications repeat the owner-manual alert information; they do not establish a model-specific repair procedure.

16. Recall information

  • No recall is established by the supplied verified evidence.

17. Official manufacturer information

Official NHTSA-hosted Tesla documentation describes CP_a046 as an interruption in communication with external charging equipment and states it is usually specific to the charging equipment and power source: https://static.nhtsa.gov/odi/tsbs/2023/MC-10250484-9999.pdf

19. Frequently asked questions

What does Tesla CP_a046 mean?

It means charging stopped because communication between the vehicle and external charging equipment was interrupted.

Does CP_a046 usually mean the Tesla has a fault?

Tesla documentation says the alert is usually specific to external charging equipment and power sources and does not typically indicate a vehicle issue.

What should I check for CP_a046?

Check the power source and charging equipment, as stated in the alert. Consult the Tesla owner manual’s Charging Instructions for your vehicle.

Is it safe to drive with CP_a046?

Not yet established by verified evidence.

20. Sources & verification

Accepted ResearchVerified
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Tesla CP_a046: Charging equipment communication lost Check power… | EV Diagnostics