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C126E00 — Functional limitation due to battery open circuit
Functional limitation due to battery open circuit. The Taycan, Panamera (971) 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 C126E00
How to read and clear C126E00
- 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 C126E00 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 Roll Control System
| B2F0200 | Development code 2 |
| C054500 | VIN Not Programmed or Incompatible - BSCM |
| C102A00 | System function test |
| C10A700 | Rolling test mode active |
| C10EE00 | Rolling test mode - fault |
| C124E00 | 48V-System |
| C129600 | Sway Stabilization Control Module |
| C12964B | Sway Stabilization Control Module, excessive temperature |
| C1296F0 | Sway Stabilization Control Module, Low temperature |
| C1296F1 | Sway Stabilization Control Module, Incompatible version |
| C1296F5 | Sway stabilization control module, Pneumatic suspension shut-off |
| C129700 | Function limitation due to malfunction in sway control module |
All 81 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.