Home › Fault codes › C100C01
C100C01 — Electro-mechanical parking brake button, Electrical error
Electro-mechanical parking brake button, Electrical error. 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 C100C01
How to read and clear C100C01
- 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 C100C01 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
| C055F00 | BSCM/EBBC Hydraulic Unit Performance |
| C056100 | Vacuum Sensor "A/B" Correlation |
| C056300 | ABS Control Module Performance |
| C058F00 | Recuperation torque, signal implausible |
| C059800 | Brake System Control Module "B" Performance |
| C059A00 | Power Steering Control Module - Rear Missing Calibration |
| C100C07 | Electro-mechanical parking brake button, mechanical malfunction |
| C100D11 | Left locking motor power supply - short circuit to ground |
| C100D12 | Left locking motor power supply - short circuit to B+ |
| C100D13 | Left Parking Brake Motor voltage supply, Open circuit |
| C100E11 | Right locking motor power supply - short circuit to ground |
| C100E12 | Right locking motor power supply - short circuit to B+ |
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.