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Tesla CP_a043

Charge port door sensor fault Charge port may not operate as expected

Common search variants: CPa043 · CP-a043 · CP a043 · Search ignores case and common separators.

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceNot yet established by verified evidence.
Confidence95%

Quick answer

CP_a043 is a Tesla alert indicating that one charge-port door sensor is not functioning normally. The charge port may be unable to accurately detect door position and may not operate as expected.

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_a043 mean?

CP_a043 is a Tesla alert indicating that one charge-port door sensor is not functioning normally. The charge port may be unable to accurately detect door position and may not operate as expected.

2. Technical explanation

Verified Tesla owner-manual material filed with NHTSA states that CP_a043 occurs when one of the charge-port door sensors is not functioning normally. As a result, the charge port may be unable to accurately sense the charge-port door position. The documented consequence is that the charge port may not operate as expected.

3. What system is affected?

Charge-port door sensing system.

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • The charge port may not operate as expected.
  • The charge port may be unable to accurately sense the charge-port door position.
  • The charge-port latch may intermittently malfunction; the supplied verified evidence is truncated after this statement.

6. Possible causes

  • One of the charge-port door sensors is not functioning normally.

7. Can I still drive the vehicle?

Not yet established by verified evidence.

8. Can I charge the vehicle?

Not yet established by verified evidence.

9. What you can safely do

  • Follow the charging instructions in the applicable Tesla Owner's Manual.
  • Do not attempt high-voltage or charge-port disassembly based on this alert.

10. Step-by-step troubleshooting

  1. Consult the applicable Tesla Owner's Manual charging instructions. Further owner troubleshooting procedures are not established by the supplied verified evidence.

11. When to contact service

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 MC-10250484, published December 1, 2023: Tesla owner-manual material includes CP_a043 and describes a charge-port door sensor not functioning normally. https://static.nhtsa.gov/odi/tsbs/2023/MC-10250484-9999.pdf
  • NHTSA manufacturer communication MC-10253666, published March 27, 2024: Tesla owner-manual material includes CP_a043. https://static.nhtsa.gov/odi/tsbs/2024/MC-10253666-9999.pdf

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified NHTSA-filed Tesla owner-manual communications identify CP_a043 as “Charge port door sensor fault — Charge port may not operate as expected.” Applicability evidence covers US Tesla Model 3 (2013–2024), Model S (2012–2024), Model X (2016–2024), and Model Y (2020–2024), with overlapping year ranges in the source data. Exact vehicle applicability should be confirmed against the applicable vehicle documentation.

19. Frequently asked questions

What does Tesla alert CP_a043 mean?

It means one charge-port door sensor is not functioning normally, so the charge port may not accurately sense door position and may not operate as expected.

Does CP_a043 confirm that charging is unavailable?

No. Whether the vehicle can charge is not yet established by verified evidence.

Is it safe to drive with CP_a043?

Not yet established by verified evidence.

20. Sources & verification

Accepted ResearchVerified
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Tesla CP_a043: Charge port door sensor fault Charge port may not… | EV Diagnostics