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B164504 — Airbag in lumbar support 2, Faulty

Airbag in lumbar support 2, Faulty. 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 B164504

Porsche Taycan

Seat Module, DriverSeat Module, Passenger

Porsche 911 (992)

Seat Module, DriverSeat Module, Passenger

Porsche Panamera (971, 2017–2023)

Seat Module, DriverSeat Module, PassengerSeat Control Module, Rear Driver SideSeat Control Module, Rear Passenger Side

Porsche Panamera (972, 2024–)

Seat Module, DriverSeat Module, PassengerSeat Control Module, Rear Driver SideSeat Control Module, Rear Passenger Side

Porsche Cayenne (9YA)

Seat Module, DriverSeat Module, Passenger

How to read and clear B164504

  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 B164504 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 Seat Module, Driver

B15F2F0Customer for seat cushion bolster adjustment, Activation tight, mechanical error
B15F2F1Customer for seat cushion bolster adjustment, Activation next, mechanical error
B15F329Button for seat cushion bolster adjustment, Implausible signal
B15F3F0Button for seat cushion bolster adjustment, Activation tight, mechanical error
B15F3F1Button for seat cushion bolster adjustment, Activation next, mechanical error
B164404Airbag in lumbar support 1, Faulty
B164604Airbag in lumbar support 3, Faulty
B164704Airbag for seatback bolster, left, Faulty
B164804Airbag for seatback bolster, right, Faulty
B164904Airbag for side bolster, left, Faulty
B165004Airbag for side bolster, right, Faulty
B166602Motor for adjustment of visual display unit, Signal error

All 222 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.