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B134C29 — Seat height adjustment button, Implausible signal

Seat height adjustment button, Implausible signal. 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 B134C29

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 B134C29

  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 B134C29 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

B132929Seat memory adjustment position 3 button, Implausible signal
B132A07Button for storing seat position, mechanical malfunction
B132A29Button for storing seat position, Implausible signal
B134B07Seat tilt adjustment button, mechanical malfunction
B134B29Seat tilt adjustment button, Implausible signal
B134C07Seat height adjustment button, mechanical malfunction
B134D07Seat fore/aft adjustment button, mechanical malfunction
B134D29Seat fore/aft adjustment button, Implausible signal
B134E07Seat backrest adjustment button, mechanical malfunction
B134E29Seat backrest adjustment button, Implausible signal
B135007Massage button, mechanical malfunction
B135029Massage button, 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.