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P0A1B00 — High-voltage power electronics faulty
High-voltage power electronics faulty. The Taycan, 911 (992), 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 P0A1B00
How to read and clear P0A1B00
- 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 P0A1B00 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 Drive Motor Control Module
| P072100 | Speed sensor, transmission output – signal implausible |
| P072200 | Speed sensor, transmission output - no signal |
| P072300 | Transmission output speed sensor, misfire |
| P077C00 | Speed sensor, transmission output – short circuit to ground |
| P077D00 | Speed sensor, transmission output - short circuit to B+ |
| P0A0100 | Medium-temperature circuit – temperature implausible (TW5/TW9/TW10) |
| P0A2B00 | Electric machine, temperature sensor – signal implausible |
| P0A2C00 | Electric machine, temperature sensor – short circuit to ground |
| P0A2D00 | Electric machine - temperature sensor – short circuit to B+/open circuit |
| P0A2E00 | Electric machine, temperature sensor – dropouts |
| P0A2F00 | Electric machine - temperature too high |
| P0A3C00 | Inverter - temperature too high |
All 143 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.