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Volkswagen U14FF00

passive sporadic ‒ Symptom 8491265 • U14FF00 safe onboard communication, signature check failed, passive sporadic ‒ Symptom 8491267 Technical Service Bulletin Transaction No: 20681

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence.
ServiceContact a Volkswagen dealer or qualified Volkswagen service provider if the code requires diagnosis. The verified evidence does not establish urgency or a required repair.
Confidence95%

Quick answer

For a 2022 Volkswagen ID.4 in the US, U14FF00 may be logged as a passive/sporadic entry in the software cluster embedded 1 control unit. Volkswagen’s cited Technical Service Bulletin identifies the entries as irrelevant diagnostic trouble codes.

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 U14FF00 mean?

For a 2022 Volkswagen ID.4 in the US, U14FF00 may be logged as a passive/sporadic entry in the software cluster embedded 1 control unit. Volkswagen’s cited Technical Service Bulletin identifies the entries as irrelevant diagnostic trouble codes.

2. Technical explanation

Verified NHTSA-hosted Volkswagen TSB 2068173/1, released October 17, 2022, lists these software cluster embedded 1 control unit (diagnosis address C002) entries: U14FF00, “safe onboard communication, time server not available,” passive/sporadic, symptom 8491265; and U14FF00, “safe onboard communication, signature check failed,” passive/sporadic, symptom 8491267. The bulletin title is “Irrelevant Diagnostic Trouble Codes (DTCs) Logged in Various Control Units.”

3. What system is affected?

Software cluster embedded 1 control unit, diagnosis address C002.

4. How serious is this code?

Not yet established by verified evidence. The available Volkswagen bulletin characterizes the listed DTCs as irrelevant, but does not provide a severity rating.

5. Symptoms you may notice

  • No driver-observable symptoms are established by the verified evidence.

6. Possible causes

  • The verified bulletin identifies U14FF00 entries associated with “time server not available” (symptom 8491265) and “signature check failed” (symptom 8491267). It does not establish root causes beyond those recorded descriptions.

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

  • Record the exact DTC status and symptom number shown by the diagnostic scan.
  • Have a Volkswagen service provider assess the vehicle using the applicable Volkswagen service information if diagnosis is needed.

10. Step-by-step troubleshooting

  1. Verify whether the stored entry is U14FF00 in control unit C002 and whether it is marked passive/sporadic.
  2. Verify whether symptom 8491265 (“time server not available”) or symptom 8491267 (“signature check failed”) is recorded.
  3. Consult Volkswagen TSB transaction 2068173/1 for the applicable vehicle and diagnostic context.

11. When to contact service

Contact a Volkswagen dealer or qualified Volkswagen service provider if the code requires diagnosis. The verified evidence does not establish urgency or a required repair.

12. What the service center may check

  • Scan the software cluster embedded 1 control unit (diagnosis address C002) for U14FF00.
  • Confirm the associated symptom number: 8491265 or 8491267.
  • Review Volkswagen Technical Service Bulletin transaction 2068173/1, “Irrelevant Diagnostic Trouble Codes (DTCs) Logged in Various Control Units.”

13. Possible repair or resolution

  • No repair procedure or resolution is established by the verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Volkswagen Technical Service Bulletin transaction 2068173/1, release date October 17, 2022: “Irrelevant Diagnostic Trouble Codes (DTCs) Logged in Various Control Units.” NHTSA manufacturer communication number MC-10224845-0001.

16. Recall information

  • No recall is established by the verified evidence.

17. Official manufacturer information

Official source: NHTSA-hosted Volkswagen manufacturer communication PDF 10224845, Volkswagen TSB transaction 2068173/1, released October 17, 2022: https://static.nhtsa.gov/odi/tsbs/2022/MC-10224845-0001.pdf

19. Frequently asked questions

What does U14FF00 mean on a 2022 Volkswagen ID.4?

The verified Volkswagen bulletin lists U14FF00 in control unit C002 as either “safe onboard communication, time server not available” with symptom 8491265, or “safe onboard communication, signature check failed” with symptom 8491267. Both are listed as passive/sporadic.

Is U14FF00 covered by a Volkswagen service bulletin?

Yes. Volkswagen TSB transaction 2068173/1 lists these entries under “Irrelevant Diagnostic Trouble Codes (DTCs) Logged in Various Control Units.”

Can I drive or charge with U14FF00?

Not yet established by verified evidence.

20. Sources & verification

Verified
Volkswagen U14FF00: passive sporadic ‒ Symptom 8491265 • U14FF00 safe… | EV Diagnostics