U15B5 on Audi
Quick Battery Charging (DC) - Charging Station Not Active
U15B5 on Audi vehicles indicates quick battery charging (dc) - charging station not active. Au7o has documented this code across 1 Audi model — most commonly on e-tron. 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the codes stored in high-voltage battery charger J1050 on 2020-2021 e-tron quattro and e-tron Sportback, attributed to outdated onboard-charger software rather than a vehicle hardware defect.
Common Causes of U15B5
- •Outdated onboard-charger software (level 0070 and later affected levels) - Audi TSB 2061788 / 2062631, remedied by the OBC software update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
U15B5 on Audi by Model
Audi e-tron(1 issue)
- 2021 e-tron Charging Interruptions with Onboard-Charger Software 0070 - Diagnosis Required2021
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.
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What does U15B5 mean on Audi?▼
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the codes stored in high-voltage battery charger J1050 on 2020-2021 e-tron quattro and e-tron Sportback, attributed to outdated onboard-charger software rather than a vehicle hardware defect. On Audi specifically, this code is documented across 1 model.
What causes U15B5 on Audi vehicles?▼
Common causes on Audi: Outdated onboard-charger software (level 0070 and later affected levels) - Audi TSB 2061788 / 2062631, remedied by the OBC software update, Charging station fault,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. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix U15B5 on a Audi?▼
Repair costs vary widely depending on the root cause and specific Audi model.
Which Audi models have U15B5 documented?▼
Au7o has documented U15B5 on 1 Audi model: e-tron.