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U15AA00 — Rapid battery charging (DC) – electrical fault in charging station
Rapid battery charging (DC) – electrical fault in charging station. The Taycan, Panamera (971), Panamera (972) and Cayenne report this code; below is which control unit sets it on each model and how to read and clear it.
Which models and control units set U15AA00
How to read and clear U15AA00
- Plug a standard ENET (Ethernet-to-OBD) cable into your Porsche's OBD port and your Mac or Windows PC.
- Open STEUER14, pick your car and run a fault scan: every control unit is read, and U15AA00 shows with its status, its full description and the freeze frame when the unit stores one.
- Fix the cause first, then clear the fault memory and scan again to check it stays away. Reading and clearing fault codes is free on every control unit.
More about fault memory in the manual →
Download STEUER14 — free fault readingOther codes of the On-Board Charger
| U140100 | Function restriction – supply voltage too high |
| U140900 | Internal temperature measurement, Implausible signal |
| U14CA00 | External charging infrastructure – infrastructure does not support vehicle communication protocol |
| U152200 | High-voltage charger, Plug and Charge function – communication from backend implausible |
| U153100 | Internal temperature measurement, Implausible signal |
| U15A900 | Intelligent charging function, Function restriction |
| U15AB00 | Quick battery charging (DC), Communication error between vehicle and charging station |
| U15AC00 | Signal damping log, Malfunction |
| U15AD00 | Quick battery charging (DC), Charging station incompatible |
| U15AE00 | Quick battery charging (DC), Charging station communication failure |
| U15AF00 | Quick battery charging (DC), Charging station encoding failed |
| U15B000 | Rapid battery charging (DC) – fault in locking the charging cable |
All 221 codes of this control unit →
Fault names come from the manufacturer's diagnostic data. STEUER14 is independent and not affiliated with Porsche AG. A code tells you what a control unit detected, not always which part failed — check wiring, supply voltage and related codes before replacing parts. STEUER14 shows each fault's full description, status and freeze frame on the car.