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Jeep U0149

Lost Communication With Security Gateway. At this time, technicians should perform a key‑ cycle recovery to restore normal function. D

DriveUnknown. Verified evidence does not establish whether the vehicle is safe to drive with U0149-00.
ChargeUnknown. Verified evidence does not establish whether charging is safe or affected with U0149-00.
ServiceContact an authorized Jeep service facility if U0149-00 persists, returns after a key-cycle recovery, or normal function is not restored.
Confidence95%

Quick answer

For verified Jeep applications, DTC U0149-00 indicates “Lost Communication With Security Gateway.” The official manufacturer communication says technicians should perform a key-cycle recovery to restore normal function.

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 U0149 mean?

For verified Jeep applications, DTC U0149-00 indicates “Lost Communication With Security Gateway.” The official manufacturer communication says technicians should perform a key-cycle recovery to restore normal function.

2. Technical explanation

U0149-00 is a communication fault indicating lost communication with the Security Gateway. The supplied official manufacturer communication states that this code may be set in other modules with no MIL illumination and directs technicians to perform a key-cycle recovery to restore normal function.

3. What system is affected?

Security Gateway communication network. No further system detail is established by the verified evidence.

4. How serious is this code?

Unknown. The supplied evidence does not assign a severity level.

5. Symptoms you may notice

  • U0149-00 may be stored in other modules.
  • The official communication states this may occur with no MIL illumination.

6. Possible causes

  • Not yet established by verified evidence.

7. Can I still drive the vehicle?

Unknown. Verified evidence does not establish whether the vehicle is safe to drive with U0149-00.

8. Can I charge the vehicle?

Unknown. Verified evidence does not establish whether charging is safe or affected with U0149-00.

9. What you can safely do

  • Perform a key-cycle recovery as directed in the official manufacturer communication.
  • If the code or related concern returns, arrange diagnosis by an authorized Jeep service facility.

10. Step-by-step troubleshooting

  1. Perform the key-cycle recovery specified by the manufacturer communication.
  2. Check whether normal function returns after the key cycle.
  3. If normal function does not return or the DTC recurs, have the vehicle evaluated by a qualified Jeep technician.

11. When to contact service

Contact an authorized Jeep service facility if U0149-00 persists, returns after a key-cycle recovery, or normal function is not restored.

12. What the service center may check

  • Confirm the presence of U0149-00 in affected modules.
  • Perform the manufacturer-directed key-cycle recovery.
  • Verify whether normal function is restored after the recovery.

13. Possible repair or resolution

  • The verified manufacturer communication identifies a key-cycle recovery as the action to restore normal function.
  • No permanent repair, component replacement, or root-cause repair is established by the supplied evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • NHTSA Manufacturer Communication PDF 11031224: 08-143-26, published April 3, 2026. It notes that U0149-00 may be set in other modules with no MIL illumination and directs technicians to perform a key-cycle recovery to restore normal function. https://static.nhtsa.gov/odi/tsbs/2026/MC-11031224-0001.pdf

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified applicability: 2024-2026 Jeep Grand Cherokee, Recon, and Wagoneer vehicles in the United States. Source: NHTSA-hosted official manufacturer communication 08-143-26.

19. Frequently asked questions

What does Jeep code U0149-00 mean?

It means “Lost Communication With Security Gateway.”

Will the malfunction indicator lamp illuminate with U0149-00?

Not necessarily. The official communication states that U0149-00 may be set in other modules with no MIL illumination.

What action does the manufacturer communication specify?

It directs technicians to perform a key-cycle recovery to restore normal function.

Which vehicles are verified as applicable?

The supplied evidence lists 2024-2026 Jeep Grand Cherokee, Recon, and Wagoneer vehicles in the United States.

20. Sources & verification

ReferenceVerified
Jeep U0149: Lost Communication With Security Gateway. At this time,… | EV Diagnostics