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Tesla CHG_u004

Charging stopped - Power lost while charging Check power source and charging equipment

Common search variants: CHGu004 · CHG-u004 · CHG u004 · Search ignores case and common separators.

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence. The alert indicates that the current charging session stopped after power was lost.
ServiceNot yet established by verified evidence. If the issue persists, the supplied official material does not specify a service-contact threshold or procedure.
Confidence95%

Quick answer

Tesla alert CHG_u004 means charging stopped because power was lost during charging. Verified documentation says to check the power source and charging equipment.

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 CHG_u004 mean?

Tesla alert CHG_u004 means charging stopped because power was lost during charging. Verified documentation says to check the power source and charging equipment.

2. Technical explanation

Official Tesla material filed with NHTSA states that power was lost during charging. It may result from charging equipment losing power from its source, such as a wall outlet, or from an issue with the charging equipment. The supplied evidence does not establish a vehicle-side fault.

3. What system is affected?

Charging power source and charging equipment.

4. How serious is this code?

Unknown. The verified database does not assign a severity.

5. Symptoms you may notice

  • Charging stops.
  • The vehicle displays CHG_u004: “Charging stopped - Power lost while charging Check power source and charging equipment.”

6. Possible causes

  • The charging equipment lost power from its source, for example a wall outlet.
  • An issue with the charging equipment.

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. The alert indicates that the current charging session stopped after power was lost.

9. What you can safely do

  • Check the power source and charging equipment, as directed by the alert.
  • For Mobile Connector or Wall Connector status-light troubleshooting, consult the applicable product Owner’s Manual at Tesla Charging & Adapter Product Guides.
  • Do not perform high-voltage repairs yourself.

10. Step-by-step troubleshooting

  1. Review whether the charging equipment has power from its source.
  2. Consult the applicable Mobile Connector or Wall Connector Owner’s Manual for status-light troubleshooting.
  3. Not yet established by verified evidence: further diagnostic steps or a definitive vehicle repair procedure.

11. When to contact service

Not yet established by verified evidence. If the issue persists, the supplied official material does not specify a service-contact threshold or procedure.

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 PDF 10253660: Index381, published March 26, 2024: https://static.nhtsa.gov/odi/tsbs/2024/MC-10253660-9999.pdf
  • NHTSA Manufacturer Communication PDF 10250483: ManualC, published December 1, 2023: https://static.nhtsa.gov/odi/tsbs/2023/MC-10250483-9999.pdf
  • NHTSA Manufacturer Communication PDF 10240951: Owner's Manual, published June 9, 2023: https://static.nhtsa.gov/odi/tsbs/2023/MC-10240951-9999.pdf

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified official NHTSA-filed Tesla documentation identifies CHG_u004 as a charging interruption caused by lost power during charging. The supplied evidence applies in the US to Tesla Model 3 (2017–2023), Model S (2012–2023), and Model X (2016–2023). Source: https://static.nhtsa.gov/odi/tsbs/2023/MC-10250483-9999.pdf

19. Frequently asked questions

What does Tesla CHG_u004 mean?

It means charging stopped because power was lost during charging.

What can cause CHG_u004?

Verified documentation identifies loss of power to the charging equipment from its source, such as a wall outlet, or an issue with the charging equipment.

Does CHG_u004 prove the vehicle has a fault?

No. The supplied evidence does not establish a vehicle-side fault.

Which vehicles are covered by the supplied applicability data?

US Tesla Model 3 model years 2017–2023, Model S model years 2012–2023, and Model X model years 2016–2023.

20. Sources & verification

Verified
Show all 24 verified sources
Tesla CHG_u004: Charging stopped - Power lost while charging Check… | EV Diagnostics