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B10D54B — Rear air quantity motor, Excess temp.
Rear air quantity motor, Excess temp.. 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 B10D54B
How to read and clear B10D54B
- 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 B10D54B 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
| B10D44B | Right rear upper body vent motor, Excess temp. |
| B10D504 | Rear air quantity motor, Faulty |
| B10D507 | Rear air quantity motor, mechanical malfunction |
| B10D51C | Rear air quantity motor, Voltage implausible |
| B10D521 | Rear air quantity motor, Lower limit not reached |
| B10D522 | Rear air quantity motor, Upper limit exceeded |
| B10D604 | Servo motor for temp. premixing valve, rear - faulty |
| B10D607 | Rear temperature door motor, mechanical malfunction |
| B10D61C | Rear temperature door motor, Voltage implausible |
| B10D621 | Rear temperature door motor, Lower limit not reached |
| B10D622 | Rear temperature door motor, Upper limit exceeded |
| B10D64B | Rear temperature door motor, Excess temp. |
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.