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B17DE04 — Air cushion in tilt adjustable foot rest, faulty

Air cushion in tilt adjustable foot rest, 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 B17DE04

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 B17DE04

  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 B17DE04 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 Seat Module, Driver

B166B4BDisplay unit adjustment motor 2, temperature - above limit value
B166B54Motor for adjustment 2 of visual display unit, No basic setting
B166F11Sensor for adjustment of visual display unit, Short circuit to ground
B166F29Sensor for adjustment of visual display unit, Implausible signal
B167A11Sensor for adjustment 2 of visual display unit, Short circuit to ground
B167A29Sensor for adjustment 2 of visual display unit, Implausible signal
B185402Motor for foot support adjustment, Signal error
B185413Motor for foot support adjustment, Open circuit
B18544BFootrest adjustment motor, temperature - above limit value
B185454Motor for foot support adjustment, No basic setting
B185511Sensor for foot support adjustment, Short circuit to ground
B185529Sensor for foot support adjustment, Implausible signal

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.