P1A15 on 2021 Audi e-tron — Charging Unit 2 - Function Restriction
1 vehicles · 1 makes
Most Reported On
P1A15 is an OBD-II diagnostic trouble code meaning “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. This code is most commonly reported on 2021 Audi e-tron.
Common Causes
Diagnostic Tools
P1A15 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 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The most common causes of P1A15 are: Outdated onboard-charger software (level 0070) - Audi's documented production solution is updated OBC software (TSB 2061788, SVM code C6A008), Thermal derating of the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.