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B109D07 — Air distribution door motor, mechanical malfunction

Air distribution door motor, mechanical malfunction. 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 B109D07

Porsche Taycan

Central Electrics

Porsche 911 (992)

BCM1 (Body Control Module 1)

Porsche Panamera (971, 2017–2023)

BCM1 (Body Control Module 1)

Porsche Panamera (972, 2024–)

BCM1 (Body Control Module 1)

Porsche Cayenne (9YA)

BCM1 (Body Control Module 1)

How to read and clear B109D07

  1. Plug a standard ENET (Ethernet-to-OBD) cable into your Porsche's OBD port and your Mac or Windows PC.
  2. Open STEUER14, pick your car and run a fault scan: every control unit is read, and B109D07 shows with its status, its full description and the freeze frame when the unit stores one.
  3. 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 →

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Other codes of the Central Electrics

B109307Rear air distribution door motor, mechanical malfunction
B10931CRear air distribution door motor, Voltage implausible
B109321Rear air distribution door motor, Lower limit not reached
B109322Rear air distribution door motor, Upper limit exceeded
B10934BRear air distribution door motor, Excess temp.
B109D04Air distribution door motor, Faulty
B109D1CAir distribution door motor, Voltage implausible
B109D21Air distribution door motor, Lower limit not reached
B109D22Air distribution door motor, Upper limit exceeded
B109D4BAir distribution door motor, Excess temp.
B109E13A/C compressor run-in - open circuit
B109EF0Electric air-conditioning compressor (V470), not taught

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.