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U143D00 — FlexRay data bus, limited

FlexRay data bus, limited. 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 U143D00

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 U143D00

  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 U143D00 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

U13EE00Airbag control module timestamp, implausible
U140000Function restriction – supply voltage too low
U140100Function restriction – supply voltage too high
U142000Vehicle electrical system control module, Signal not initialized
U142B00Ethernet databus, Open circuit
U143400Ethernet databus, Short circuit
U146800Laser for adaptive cruise control, implausible signal
U146900Lane change assistance control module 2, implausible signal
U146A00Control module for left front object detection radar sensor, implausible signal
U146B00Control module for right front object detection radar sensor, implausible signal
U146C00Roof antenna control units, implausible signal
U146D00Electromechanical brake booster, implausible signal

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.