Audi U15BF00
Intelligent charging function faulty communication
Quick answer
For applicable US Audi e-tron vehicles, DTC U15BF00 means “Intelligent charging function faulty communication.” Verified Audi/NHTSA material identifies it in charging-related communications contexts. It may be a static, non-erasable diagnostic artifact after a specified flashing procedure, where Audi says it may be ignored.
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 U15BF00 mean?
For applicable US Audi e-tron vehicles, DTC U15BF00 means “Intelligent charging function faulty communication.” Verified Audi/NHTSA material identifies it in charging-related communications contexts. It may be a static, non-erasable diagnostic artifact after a specified flashing procedure, where Audi says it may be ignored.
2. Technical explanation
Verified evidence identifies U15BF00 as an intelligent charging function communication fault. One official manufacturer communication states that certain DC chargers can interrupt communication between the charger and vehicle, temporarily suspending charging; the same communication states that the vehicle can also have AC charging communication errors. A separate official communication states that, after its specified flashing procedure, U15BF00 can remain static and cannot be erased because of a diagnostic flaw; in that specific post-flashing context, Audi says it may be ignored.
3. What system is affected?
Charging communication / intelligent charging function.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
- Charging may temporarily suspend when communication between certain DC chargers and the vehicle is interrupted.
- AC charging communication errors may be present.
- After the specified flashing procedure, U15BF00 may remain static and may not erase.
6. Possible causes
- Certain DC chargers can interrupt communication between the charger and vehicle.
- A diagnostic flaw following the specified flashing procedure can cause U15BF00 to remain static and non-erasable.
- Other 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?
Not yet established by verified evidence. Verified evidence states that charging can temporarily suspend when certain DC-charger communication is interrupted.
9. What you can safely do
- If charging is temporarily suspended, avoid attempting high-voltage repairs or connector repairs yourself.
- Record whether the event occurred during AC or DC charging and preserve the DTC information for a qualified Audi service provider.
- If U15BF00 appeared immediately after the flashing procedure described in Audi’s communication, provide that context to the service provider.
10. Step-by-step troubleshooting
- A qualified service provider can determine whether the code occurred following the specified flashing procedure, where the official communication says the static non-erasable code may be ignored.
- A qualified service provider can assess charging communication concerns in the context of the official communication covering interruptions at certain DC chargers and AC charging communication errors.
- Further diagnostic steps are not yet established by verified evidence.
11. When to contact service
Contact an Audi service provider if charging communication errors or charging interruptions occur, or if clarification is needed on whether the code was recorded after the specified flashing procedure.
12. What the service center may check
- Confirm whether U15BF00 is static and non-erasable after the specified flashing procedure.
- Review whether the charging event involved a DC charger, as the official communication identifies certain DC chargers as a context for interrupted charger-to-vehicle communication.
- Review associated AC charging communication errors when present.
13. Possible repair or resolution
- In the specific post-flashing scenario described by Audi, U15BF00 may be ignored because it is static and cannot be erased due to a diagnostic flaw.
- Any repair beyond that specific scenario is not yet established by verified evidence.
14. Affected vehicles
- Audi e-tron · 2019–2020 · US
- Audi e-tron · 2020–2021 · US
15. Related TSBs / service bulletins
- NHTSA Manufacturer Communication 10191575, published April 30, 2021: Following the specified flashing procedure, U15BF00 may be static and non-erasable due to a diagnostic flaw; Audi states it may be ignored in that context. https://static.nhtsa.gov/odi/tsbs/2021/MC-10191575-0001.pdf
- NHTSA Manufacturer Communication 10191572, published April 30, 2021: Certain DC chargers can interrupt charger-to-vehicle communication and temporarily suspend charging; AC charging communication errors may also occur. U15BF00 is listed among the DTCs. https://static.nhtsa.gov/odi/tsbs/2021/MC-10191572-0001.pdf
16. Recall information
- Not yet established by verified evidence.
17. Official manufacturer information
Verified applicability: Audi e-tron, US model years 2019–2021. The listed applicability records include 2019–2020 and 2020–2021 ranges. Official evidence is from NHTSA-hosted Audi manufacturer communications published April 30, 2021.
19. Frequently asked questions
What does U15BF00 mean?
It means “Intelligent charging function faulty communication.”
Can U15BF00 be ignored?
Only the verified post-flashing scenario supports that conclusion: Audi states that after the specified flashing procedure, the code may be static and non-erasable because of a diagnostic flaw and may be ignored.
Can this code be related to interrupted charging?
Yes. Verified material states that certain DC chargers can interrupt communication between the charger and vehicle, temporarily suspending charging, and lists U15BF00 among the related DTCs.
Is the vehicle safe to drive or charge with U15BF00?
Not yet established by verified evidence.