Home › Fault codes › B122700
B122700 — Voltage converter (DC/AC), function restriction - load too high
Voltage converter (DC/AC), function restriction - load too high. 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 B122700
How to read and clear B122700
- 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 B122700 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 Gateway
| B114C96 | Multi-function steering wheel, right button block - internal fault |
| B114D04 | Control unit for multi-function steering wheel faulty |
| B114E96 | Multi-function steering wheel, "Downshift" button - internal fault |
| B114F96 | Multi-function steering wheel, "Upshift" button - internal fault |
| B115496 | Switch for ACC - internal fault |
| B122600 | Voltage converter (DC/AC), function restriction - temperature too high |
| B122A04 | Voltage converter (DC/AC) faulty |
| B130E00 | Function limitation, pause recommendation |
| B163002 | Function restriction, route data not loaded |
| B167307 | Left multifunc. buttons 2 in steerg. wheel, mechanical malfunction |
| B167407 | Right multifunc. buttons 2 in steerg. wheel, mechanical malfunction |
| B168AF3 | Data bus – fault value received |
All 374 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.