U15B5 on 2021 Audi e-tron — Quick Battery Charging (DC) - Charging Station Not Active
1 vehicles · 1 makes
Most Reported On
U15B5 is an OBD-II diagnostic trouble code meaning “Quick Battery Charging (DC) - Charging Station Not Active.” The vehicle established a link with a DC fast charger but the station never became active - it did not proceed to energise the DC contract, so the vehicle logs the station as not active and ends the attempt. Audi lists DTC U15B500 in TSBs 2061788 and 2062631 among the codes stored in high-voltage battery charger J1050 on 2020-2021 e-tron quattro and e-tron Sportback, attributed to outdated onboard-charger software rather than a vehicle hardware defect. This code is most commonly reported on 2021 Audi e-tron.
Common Causes
Diagnostic Tools
U15B5 does not use the standard P/B/C/U prefix. It may be a manufacturer-specific code, so verify that a scanner supports your exact year, model and module before buying.
FAQ
What does U15B5 mean?
U15B5 stands for "Quick Battery Charging (DC) - Charging Station Not Active." The vehicle established a link with a DC fast charger but the station never became active - it did not proceed to energise the DC contract, so the vehicle logs the station as not active and ends the attempt. Audi lists DTC U15B500 in TSBs 2061788 and 2062631 among the codes stored in high-voltage battery charger J1050 on 2020-2021 e-tron quattro and e-tron Sportback, attributed to outdated onboard-charger software rather than a vehicle hardware defect.
What are the most common causes of U15B5?
The most common causes of U15B5 are: Outdated onboard-charger software (level 0070 and later affected levels) - Audi TSB 2061788 / 2062631, remedied by the OBC software update, Charging station fault, offline back-end, or failed payment/authorisation, Station-side handshake or firmware incompatibility, Poor DC pin contact in the charging socket. The specific cause varies by vehicle.
How much does it cost to fix U15B5?
Repair costs vary widely depending on the root cause and vehicle.
Which vehicles are affected by U15B5?
Au7o has documented U15B5 across 1 vehicle models from 1 manufacturers: Audi.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.