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B109307 — Rear air distribution door motor, mechanical malfunction

Rear 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 B109307

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 B109307

  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 B109307 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 →

Download STEUER14 — free fault reading

Other codes of the Central Electrics

B109207Recirculation flap motor, mechanical malfunction
B10921CRecirculation flap motor, Voltage implausible
B109221Recirculation flap motor, Lower limit not reached
B109222Recirculation flap motor, Upper limit exceeded
B10924BRecirculation flap motor, Excess temp.
B109304Rear air distribution door motor, Faulty
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
B109D07Air distribution door motor, mechanical malfunction

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.