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B10B709 — Servo motor for fresh-air/ram air flap - component fault
Servo motor for fresh-air/ram air flap - component fault. 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 B10B709
How to read and clear B10B709
- 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 B10B709 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 Air Conditioning
| B10AE29 | Refrigerant pressure sensor - message implausible |
| B10AE31 | Refrigerant circuit sensor on high pressure side (PT1) – no communication |
| B10AF04 | Air quality sensor – fault value received |
| B10AF29 | Air quality sensor - message implausible |
| B10AF31 | Air quality sensor – no communication |
| B10B704 | Servo motor for fresh-air/ram air flap, faulty |
| B10B729 | Servo motor for fresh-air/ram air flap - message implausible |
| B10B731 | Servo motor for fresh-air/ram air flap - no communication |
| B10B904 | Servo motor for front left footwell outlet vent, faulty |
| B10B929 | Servo motor for front left footwell outlet vent - message implausible |
| B10B931 | Servo motor for front left footwell outlet vent - no communication |
| B10BA04 | Servo motor for front right footwell outlet vent, faulty |
All 418 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.