Audi U15AB00
Fast battery charging (DC
Quick answer
For applicable U.S. 2020–2021 Audi e-tron vehicles, DTC U15AB00 is identified in an Audi manufacturer communication as “Fast battery charging (DC) Communication.”
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 U15AB00 mean?
For applicable U.S. 2020–2021 Audi e-tron vehicles, DTC U15AB00 is identified in an Audi manufacturer communication as “Fast battery charging (DC) Communication.”
2. Technical explanation
Verified Audi/NHTSA evidence lists U15AB00 among DTCs that may be stored in the high-voltage battery charger control module (OBC), J1050, address word 00C6. The supplied evidence establishes the DTC description as a DC fast-charging communication-related code. It does not establish a specific failed component, root cause, repair, or operating effect.
3. What system is affected?
High-voltage battery charger control module (OBC), J1050 (address word 00C6), with a DTC description related to fast battery charging (DC) communication.
4. How serious is this code?
Not yet established by verified evidence.
5. Symptoms you may notice
- Not yet established by verified evidence.
6. Possible causes
- 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.
9. What you can safely do
- Arrange diagnosis by an Audi-qualified service facility if the DTC is present.
- Do not attempt high-voltage system repair or disassembly.
10. Step-by-step troubleshooting
- Verified evidence identifies the high-voltage battery charger control module (OBC), J1050, address word 00C6, as the module in which U15AB00 may be stored.
- Further diagnostic steps are not yet established by the supplied verified evidence.
11. When to contact service
Contact an Audi-qualified service facility for diagnosis, particularly if charging concerns are present. The need for service is not otherwise established by the supplied verified evidence.
12. What the service center may check
- Confirm whether U15AB00 is stored in the high-voltage battery charger control module (OBC), J1050, address word 00C6.
- Additional service checks are not yet established by verified evidence.
13. Possible repair or resolution
- Not yet established by verified evidence.
14. Affected vehicles
- Audi e-tron · 2020–2021 · US
- Audi e-tron · 2021 · US
15. Related TSBs / service bulletins
- Audi manufacturer communications submitted to NHTSA: A9321422061788_1, published February 5, 2021 (NHTSA MC-10186996-0001); A9321452061788_2, published March 29, 2021 (NHTSA MC-10189601-0001); and A9321472061788_3, published April 30, 2021 (NHTSA MC-10191572-0001). The supplied excerpts list U15AB00 but do not establish the complete bulletin procedure, cause, or repair.
16. Recall information
- No recall information is established by the supplied verified evidence.
17. Official manufacturer information
Official NHTSA-hosted manufacturer communication: https://static.nhtsa.gov/odi/tsbs/2021/MC-10186996-0001.pdf
19. Frequently asked questions
What does Audi code U15AB00 mean?
For the applicable Audi e-tron information supplied, U15AB00 is listed as “Fast battery charging (DC) Communication.”
Which module may store U15AB00?
The supplied February 2021 Audi communication states that this code may be stored in the high-voltage battery charger control module (OBC), J1050, address word 00C6.
Does U15AB00 prove a specific part has failed?
No. A specific failed component or root cause is not yet established by the supplied verified evidence.
Can the vehicle be driven or charged with U15AB00?
Driveability and charging capability are not yet established by verified evidence.