Home › Fault codes › B116904
B116904 — Servo motor for rear left temperature mixing flap, faulty
Servo motor for rear left temperature mixing flap, faulty. 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 B116904
How to read and clear B116904
- 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 B116904 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
| B10F129 | Servo motor for rear recirculation flap - message implausible |
| B10F131 | Servo motor for rear recirculation flap - no communication |
| B10F201 | Rear left temperature sensor - electrical fault |
| B10F301 | Rear temperature sensor - electrical fault |
| B110E01 | Temperature sensor in rear left footwell - electrical fault |
| B110F01 | Temperature sensor in rear right footwell - electrical fault |
| B116909 | Servo motor for rear left temperature mixing flap - component fault |
| B116929 | Servo motor for rear left temperature mixing flap - message implausible |
| B116931 | Servo motor for rear left temperature mixing flap - no communication |
| B116A04 | Servo motor for rear right temperature mixing flap, faulty |
| B116A09 | Servo motor for rear right temperature mixing flap - component fault |
| B116A29 | Servo motor for rear right temperature mixing flap - message implausible |
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.