P1A15 on 2021 Audi e-tron — Charging Unit 2 - Function Restriction
1 vehicles · 1 makes
How to diagnose and fix P1A15: 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 infer hardware failure merely because one charging mode works, and do not order the former charger, 12-volt battery, relay, meter or portable EVSE from this card.
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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P1A15 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 P1A15 mean?
P1A15 stands for "Charging Unit 2 - Function Restriction." The high-voltage battery charger control module J1050 reports that the second charging unit (the second onboard charger channel, fitted on vehicles with dual AC charging capability) is operating with restricted function. Charging can continue at reduced power or may be interrupted. Audi TSBs 2061788 and 2062631 list P1A1500 among the charger codes on 2020-2021 e-tron quattro and e-tron Sportback attributable to onboard-charger software level 0070.
What are the most common causes of P1A15?
The most common causes of P1A15 are: Outdated onboard-charger software (level 0070) - Audi's documented production solution is updated OBC software (TSB 2061788, SVM code C6A008), Thermal derating of the second charger channel, Internal fault in the second charging unit, Supply-side voltage or phase problem on the AC feed. The specific cause varies by vehicle.
How much does it cost to fix P1A15?
Repair costs vary widely depending on the root cause and vehicle.
Which vehicles are affected by P1A15?
Au7o has documented P1A15 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.