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C12D9F0 — Lane departure warning, Status feedback for HMI implausible

Lane departure warning, Status feedback for HMI implausible. 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 C12D9F0

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 C12D9F0

  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 C12D9F0 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

C12D6F2remote controlled parking, Sign-of-life signal, sudden value change
C12D6F3remote controlled parking, Sign-of-life signal, value not incremented
C12D6F4remote controlled parking, Request, coordinate implausible
C12D6F5remote controlled parking, Request implausible
C12D7F0Emergency assistant, Status feedback for HMI implausible
C12D8F0Intersection assistant, Status feedback for HMI implausible
C12DAF0Distance warning (high), Status feedback for HMI implausible
C12DBF0Distance warning (low), Status feedback for HMI implausible
C12DCF0Lane change assistance, Status feedback for HMI implausible
C12DDF0Exit warning, Status feedback for HMI implausible
C12DEF0Nightview assist, Status feedback for HMI implausible
C12DFF0Pre Sense, Status feedback for HMI implausible

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.