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C12A429 — ESC control intervention, Implausible signal
ESC control intervention, Implausible signal. 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 C12A429
How to read and clear C12A429
- 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 C12A429 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 Rear Axle Steering
| C11DFF0 | Ctrl. module for rear-wheel drive, Initialization failed |
| C11E4F0 | Function restriction due to insufficient power-steering assistance |
| C11E5F0 | Steering rack position sensor - interchange detected |
| C123800 | Positioning in the center failed |
| C124000 | Reinitialization trip |
| C12A329 | Dynamic all wheel drive, Implausible signal |
| P061000 | Control unit - variant coding invalid |
| U101100 | Supply voltage – too low |
| U101200 | Supply voltage – too high |
| U101300 | Coding |
| U101400 | Coding |
| U103000 | LIN bus 1 – electrical fault |
All 65 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.