Home › Fault codes › B13BF31

B13BF31 — Valve block 3, No signal

Valve block 3, No 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 B13BF31

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 B13BF31

  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 B13BF31 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

B13BEF0valve block 2, Low temperature
B13BEF1valve block 2, Voltage on the coding pin implausible
B13BF04Valve block 3, Faulty
B13BF16valve block 3, Voltage too low
B13BF17valve block 3, voltage too high
B13BF29Valve block 3, Implausible signal
B13BF4BValve block 3, Excess temp.
B13BFF0valve block 3, Low temperature
B13BFF1valve block 3, Voltage on the coding pin implausible
B153907Upper backrest adjustment button, mechanical malfunction
B153929Upper backrest adjustment button, Implausible signal
B153A07Seat depth adjustment button, mechanical malfunction

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.