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B19684B — Right rear seat backrest fan 2, Excess temp.

Right rear seat backrest fan 2, Excess temp.. 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 B19684B

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 B19684B

  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 B19684B 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

B196804Right rear seat backrest fan 2, Faulty
B196807Right rear seat backrest fan 2, mechanical malfunction
B196816Right rear seat backrest fan 2, Voltage too low
B196817Right rear seat backrest fan 2, Voltage too high
B196829Right rear seat backrest fan 2, Implausible signal
B196831Right rear seat backrest fan 2, No signal
B196856Right rear seat backrest fan 2, invalid system configuration
B196904Fan for seat cushion, rear right - faulty
B196907Fan for seat cushion, rear right - mechanical fault
B196916Fan for seat cushion, rear right - undervoltage
B196917Fan for seat cushion, rear right - overvoltage
B196929Fan for seat cushion, rear right - message implausible

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.