U15B5 on 2021 Audi e-tron (e-tron quattro, e-tron Sportback) — Quick Battery Charging (DC) - Charging Station Not Active
1 vehicles · 1 makes
How to diagnose and fix U15B5: most-reported vehicles
Ranked by owner reports. Each card gives the symptoms, how to confirm the cause, the fix, parts and sources for that vehicle.
Audi e-tron · 2021–2021
Audi TSB 2061788/2 covers model-year 2021 e-tron quattro and e-tron Sportback vehicles with specified AC/DC charging interruptions, charging-flap operation problems, or an app request for auxiliary heating that does not pre-heat the vehicle when matching DTCs are stored in high-voltage battery charger control module J1050. Audi attributes the documented condition to onboard-charger software and identifies old software level 0070, not a proven failed charger module.
Common Symptoms
- AC or DC charging is interrupted
- DC charging does not start or stops at some stations
- Charging-flap button is inoperative or the flap does not open
- Auxiliary heating is activated through the app but the vehicle does not pre-heat
How to Fix
Record whether the failure is AC, DC or station-specific and have J1050 scanned before parts. If the vehicle has the matching condition and software level 0070, Audi directs an SVM update to software 0079 or higher. After the update, reproduce the concern and follow the guided test plan for any new active DTC. Do not assume a hardware failure just because one charging mode works.
Owner tips & cautions
- TipBring the failed station, date and charging mode to the diagnosis and ask for the J1050 software level and full DTC list before authorizing hardware.
Sources for this issue (1)
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U15B5 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
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the codes stored in high-voltage battery charger J1050 on 2020-2021 e-tron quattro and e-tron Sportback, attributed to outdated onboard-charger software rather than a vehicle hardware defect.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.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.