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C1115F8 — Lane change assistance control module 2, BlockID not plausible

Lane change assistance control module 2, BlockID not plausible. The Taycan, 911 (992), 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 C1115F8

Porsche Taycan

Front Assist Camera

Porsche 911 (992)

ZFAS (Zentrales Fahrer Assistenz System)

Porsche Panamera (972, 2024–)

ZFAS (Zentrales Fahrer Assistenz System)

Porsche Cayenne (9YA)

ZFAS (Zentrales Fahrer Assistenz System)

How to read and clear C1115F8

  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 C1115F8 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 Front Assist Camera

C10ACFDSteering, Rack position interface not available
C10DDF2Data Bus OBD Interface, Signal not initialized
C10EE00Rolling test mode - fault
C110BF1Adaptive cruise control sensor, Signal not initialized
C110BF2Adaptive cruise control sensor, implausible condition
C1114F5Lane change assistance control module, BlockID not plausible
C117554Matrix high beam left, No basic setting
C117654Matrix high beam right, No basic setting
C11E3F0Function restriction, Due to implausible vehicle reference speed
C11EDFAHolding function, unexpected values from brake electronics
C1299F0Matrix light, Active fog mode
C12A9F0High beam assistant, Active fog mode

All 336 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.