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Audi U15B500

Fast battery charging (DC

DriveNot yet established by verified evidence.
ChargeNot yet established by verified evidence. Verified evidence indicates that charging can temporarily suspend during certain DC-charger communication interruptions.
ServiceAudi service evaluation is appropriate if U15B500 recurs, DC charging suspends, or charging communication errors are present. Service urgency is not established by verified evidence.
Confidence95%

Quick answer

Audi DTC U15B500 is identified in verified Audi communications as “Fast battery charging (DC) Charging station.” It is documented for US-market 2020–2021 Audi e-tron vehicles.

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 U15B500 mean?

Audi DTC U15B500 is identified in verified Audi communications as “Fast battery charging (DC) Charging station.” It is documented for US-market 2020–2021 Audi e-tron vehicles.

2. Technical explanation

Audi technical communications list U15B500 among DTCs associated with charging-related events. One verified bulletin states that certain DC chargers can have communication between the charger and vehicle interrupted, temporarily suspending vehicle charging; it also notes AC-charging communication errors. The supplied evidence does not establish that every occurrence of U15B500 has the same cause.

3. What system is affected?

DC fast-charging / charging-station communication, as indicated by the verified DTC description.

4. How serious is this code?

Not yet established by verified evidence.

5. Symptoms you may notice

  • DC charging may temporarily suspend when charger-to-vehicle communication is interrupted, according to a verified Audi bulletin.
  • AC-charging communication errors may also be present, according to a verified Audi bulletin.

6. Possible causes

  • Certain DC chargers may experience an interruption in communication with the vehicle, according to a verified Audi bulletin.
  • Whether this is the cause of a specific U15B500 occurrence is 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 indicates that charging can temporarily suspend during certain DC-charger communication interruptions.

9. What you can safely do

  • If DC charging suspends, do not attempt high-voltage repairs.
  • Record the charger location, charging session details, and any displayed messages for service diagnosis.
  • Seek Audi service if the condition recurs or charging communication errors are present.

10. Step-by-step troubleshooting

  1. Have the vehicle evaluated using Audi diagnostic procedures. The supplied evidence does not provide a user-performed diagnostic procedure for U15B500.
  2. Consider whether the event occurred during DC charging and whether charging was temporarily suspended; these conditions are described in the verified Audi bulletin.

11. When to contact service

Audi service evaluation is appropriate if U15B500 recurs, DC charging suspends, or charging communication errors are present. Service urgency is not established by verified evidence.

12. What the service center may check

  • Retrieve and evaluate stored DTCs, including U15B500 and any accompanying charging-related DTCs.
  • Assess the reported charging event and charger-to-vehicle communication condition using Audi procedures.
  • The exact prescribed repair steps are not included in the supplied verified evidence.

13. Possible repair or resolution

  • Not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Audi/NHTSA Manufacturer Communication 10191572, published April 30, 2021: lists U15B500 as “Fast battery charging (DC) Charging station.”
  • Audi/NHTSA Manufacturer Communication 10189601, published March 29, 2021: lists U15B500 and states that certain DC chargers can have interrupted charger-to-vehicle communication, temporarily suspending charging; AC-charging communication errors may also occur.
  • Audi/NHTSA Manufacturer Communication 10186996, published February 5, 2021: lists U15B500 as “Fast battery charging (DC) Charging station.”

16. Recall information

  • No recall information was supplied in the verified evidence.

17. Official manufacturer information

Verified official NHTSA-hosted Audi communications: https://static.nhtsa.gov/odi/tsbs/2021/MC-10191572-0001.pdf ; https://static.nhtsa.gov/odi/tsbs/2021/MC-10189601-0001.pdf ; https://static.nhtsa.gov/odi/tsbs/2021/MC-10186996-0001.pdf

19. Frequently asked questions

What does Audi code U15B500 mean?

Verified Audi communications identify U15B500 as “Fast battery charging (DC) Charging station.”

Which vehicles are supported by the supplied evidence?

The supplied applicability evidence identifies US-market 2020–2021 Audi e-tron vehicles.

Can U15B500 interrupt charging?

A verified Audi bulletin states that certain DC chargers can have interrupted communication with the vehicle, temporarily suspending charging. It does not establish that this will occur in every U15B500 case.

Is U15B500 a recall?

No recall information was supplied in the verified evidence.

20. Sources & verification

Verified
Audi U15B500: Fast battery charging (DC | EV Diagnostics