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C129487 — Brake electronics – missing message from chassis controller
Brake electronics – missing message from chassis controller. 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 C129487
How to read and clear C129487
- 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 C129487 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 Brake Electronics
| C1255F0 | Towing recognition control module, Implausible brake light signal |
| C1259F0 | Brake booster control unit – undergoing diagnostics |
| C125A01 | Left parking brake motor, Engine speed implausible |
| C125AF0 | Activation of parking brake motor, left, Timeout |
| C125B01 | Right parking brake motor, Engine speed implausible |
| C129429 | Brake electronics – implausible signal from chassis controller |
| C1295F0 | Tire check indicator / wheel loose detection, Data implausible |
| C12E204 | Right parking brake motor, faulty |
| C12E219 | Right parking brake motor, Current High |
| C12E2F2 | Right parking brake motor, Engine speed implausible |
| C12E2F3 | Right parking brake motor, Activation takes too long |
| C12E2F4 | Right parking brake motor, locked |
All 317 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.