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C135CF7 — Brake electronics – missing message from brake booster
Brake electronics – missing message from brake booster. 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 C135CF7
How to read and clear C135CF7
- 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 C135CF7 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
| C135CF1 | Data bus – incorrect value received |
| C135CF2 | Data bus – incorrect value received |
| C135CF3 | Recuperation – malfunction |
| C135CF4 | Brake electronics – cooling flap position implausible |
| C135CF5 | Brake electronics – implausible signal from instrument cluster |
| C135CF6 | Brake electronics – missing message from instrument cluster |
| C1397F0 | Brake circuit hydraulics on front axle – leak detected |
| C1398F0 | Brake circuit hydraulics on rear axle – leak detected |
| C1399F0 | Service brake, grinding procedure active |
| C200100 | Coding |
| C200200 | Coding |
| C200300 | ABS valves, Faulty |
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.