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C111829 — Lane change assistance button, Implausible signal

Lane change assistance 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 C111829

Porsche Taycan

Central ElectricsDoor Module, Driver

Porsche 911 (992)

BCM1 (Body Control Module 1)Tuer_FS (Tuere vorne Fahrerseite)

Porsche Panamera (971, 2017–2023)

BCM1 (Body Control Module 1)Door Module, Driver

Porsche Panamera (972, 2024–)

BCM1 (Body Control Module 1)Tuer_FS (Tuere vorne Fahrerseite)

Porsche Cayenne (9YA)

BCM1 (Body Control Module 1)Door Module, Driver

How to read and clear C111829

  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 C111829 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 Central Electrics

C10A700Rolling test mode active
C10B329Electric interior mirror button – signal implausible
C10CE11-AUTO HOLD- Button, Short circuit to ground
C10CE29-AUTO HOLD- Button, Implausible signal
C10EE00Rolling test mode - fault
C111811Lane change assistance button, Short circuit to ground
C113B11Hill descent control button, Short circuit to ground
C113B29Hill descent control button, Implausible signal
C1179F2Pitch angle sensor, implausible signal behavior
C125E11Button engine sound generation, Short circuit to ground
C125E29Button engine sound generation, Implausible signal
P123D00A/C Pressure/Temperature Sensor 1, Pressure lower limit not reached

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.