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B196429 — Left rear seat backrest fan 2, Implausible signal

Left rear seat backrest fan 2, 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 B196429

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 B196429

  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 B196429 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 Central Electrics

B19634BFan for seat backrest, rear left - overtemperature
B196356Fan for seat backrest, rear left, coding
B196404Left rear seat backrest fan 2, Faulty
B196407Left rear seat backrest fan 2, mechanical malfunction
B196416Left rear seat backrest fan 2, Voltage too low
B196417Left rear seat backrest fan 2, Voltage too high
B196431Fan for seat cushion, rear left - no communication
B19644BLeft rear seat backrest fan 2, Excess temp.
B196456Left rear seat backrest fan 2, invalid system configuration
B196504Fan for seat cushion, rear left - faulty
B196507Fan for seat cushion, rear left - mechanical fault
B196516Fan for seat cushion, rear left - undervoltage

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.