Home › Fault codes › B200009

B200009 — Ctrl. module faulty

Ctrl. module faulty. 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 B200009

Porsche Taycan

Matrix Headlamp LeftMatrix Headlamp RightFront Assist CameraGatewayHead-Up DisplayInformation Control UnitLaser ScannerRear Axle SteeringSteering AssistSteering Column ElectronicsTelematics Communication UnitTelematics Diagnostic UnitTrailer Function

Porsche 911 (992)

Beamer Module Matrix Headlamp LeftBeamer Module Matrix Headlamp RightZFAS (Zentrales Fahrer Assistenz System)GatewayMIB2 (Zentralrechner)Steering AssistSteering Column ElectronicsTelematics Communication Unit

Porsche Panamera (971, 2017–2023)

BVS (Bildverarbeitungssystem)GatewayHeadup DisplayMIB2 (Zentralrechner)Rear Axle SteeringSteering AssistSteering Column ElectronicsTelematics Communication UnitTelematics Diagnostic UnitAAG (Anhaenger)

Porsche Panamera (972, 2024–)

Beamer Module Matrix Headlamp LeftBeamer Module Matrix Headlamp RightZFAS (Zentrales Fahrer Assistenz System)GatewayHUD (Head Up Display)MIB3 (Zentralrechner)Rear Axle SteeringSteering AssistSteering Column ElectronicsTelematics Communication UnitTelematics Diagnostic UnitAAG (Anhaenger)

Porsche Cayenne (9YA)

Beamer Module Matrix Headlamp LeftBeamer Module Matrix Headlamp RightZFAS (Zentrales Fahrer Assistenz System)GatewayHUD (Head Up Display)MIB2 (Zentralrechner)Rear Axle SteeringSteering AssistSteering Column ElectronicsTelematics Communication UnitTelematics Diagnostic UnitAAG (Anhaenger)

How to read and clear B200009

  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 B200009 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 Matrix Headlamp Left

B16CE00Control unit, reset
B184C00Release active
B200000Control unit – function restriction
B200046Control unit – function restriction
B200100Control unit – wrong software version
B200500Coding
B201200Coding
B2F0100Development code 1
B2F0200Development code 2

All 26 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.