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B10CC21 — Right center vent motor, Lower limit not reached
Right center vent motor, Lower limit not reached. 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 B10CC21
How to read and clear B10CC21
- 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 B10CC21 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 Central Electrics
| B10CB21 | Left center vent motor, Lower limit not reached |
| B10CB22 | Left center vent motor, Upper limit exceeded |
| B10CB4B | Left center vent motor, Excess temp. |
| B10CC04 | Servo motor for front right center air vent – defective |
| B10CC07 | Right center vent motor, mechanical malfunction |
| B10CC1C | Right center vent motor, Voltage implausible |
| B10CC22 | Right center vent motor, Upper limit exceeded |
| B10CC4B | Right center vent motor, Excess temp. |
| B10CD00 | Function restriction due to energy management |
| B10CE00 | Blower reduction due to energy management |
| B10CFF0 | Instrument panel temperature sensor, Electrical error in the incident solar radiation sensor |
| B10CFF1 | Instrument panel temperature sensor, Electrical error in Temperature sensor 1 |
All 1472 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.