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B10AA16 — Rear A/C control and display head, Voltage too low
Rear A/C control and display head, Voltage too low. 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 B10AA16
How to read and clear B10AA16
- 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 B10AA16 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
| B109D21 | Air distribution door motor, Lower limit not reached |
| B109D22 | Air distribution door motor, Upper limit exceeded |
| B109D4B | Air distribution door motor, Excess temp. |
| B109E13 | A/C compressor run-in - open circuit |
| B109EF0 | Electric air-conditioning compressor (V470), not taught |
| B10AA04 | Rear A/C control and display head, Faulty |
| B10AA17 | Rear A/C control and display head, voltage too high |
| B10AAF0 | Rear A/C control and display head, Button jammed |
| B10AE04 | Refrigerant circuit sensor on high pressure side (PT1) – fault |
| B10AE21 | High pressure sensor, Lower limit not reached |
| B10AE22 | High pressure sensor, Upper limit exceeded |
| B10AF04 | Air quality sensor – fault value received |
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.