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U129100 — Servo motor for rear right air distribution - message implausible
Servo motor for rear right air distribution - message implausible. 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 U129100
How to read and clear U129100
- 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 U129100 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
| U112300 | Data bus – fault value received |
| U120100 | Data bus, No communication |
| U124600 | Particle sensor - no communication |
| U124700 | Particle sensor - message implausible |
| U124F00 | Electric auxiliary heater (12V) - message implausible |
| U129000 | Servo motor for rear right air distribution - no communication |
| U12F100 | Rear A/C Control Head 1, no communication |
| U12F200 | Rear A/C Control Head 2, no communication |
| U12F900 | Comfort CAN bus 2, faulty |
| U12FA00 | Comfort CAN bus 2 - no communication |
| U132900 | Front sun sensor - message implausible |
| U132A00 | Front sun sensor - no communication |
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.