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B200004 — Control unit – function restriction

Control unit – function restriction. 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 B200004

Porsche Taycan

Antenna Control ModuleComfort System ModuleDeck Lid Control UnitFront Assist CameraInformation Control UnitRear Axle SteeringTelematics Communication Unit

Porsche 911 (992)

DDA (Digitale Dachantenne)BCM2 (Body Control Module 2)ZFAS (Zentrales Fahrer Assistenz System)MIB2 (Zentralrechner)Telematics Communication Unit

Porsche Panamera (971, 2017–2023)

BCM2 (Body Control Module 2)HDSG (Heckdeckel)MIB2 (Zentralrechner)Rear Axle SteeringTelematics Communication Unit

Porsche Panamera (972, 2024–)

DDA (Digitale Dachantenne)BCM2 (Body Control Module 2)HDSG (Heckdeckel)ZFAS (Zentrales Fahrer Assistenz System)MIB3 (Zentralrechner)Rear Axle SteeringTelematics Communication Unit

Porsche Cayenne (9YA)

DDA (Digitale Dachantenne)BCM2 (Body Control Module 2)HDSG (Heckdeckel)ZFAS (Zentrales Fahrer Assistenz System)MIB2 (Zentralrechner)Rear Axle SteeringTelematics Communication Unit

How to read and clear B200004

  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 B200004 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 Antenna Control Module

B190C11Bluetooth antenna 1 - short circuit to ground
B190C12Bluetooth antenna 1 - short circuit to B+
B190C13Bluetooth antenna 1 - interference
B1AA911Bluetooth antenna 2 - short circuit to ground
B1AA912Bluetooth antenna 2 - short circuit to B+
B1AA913Bluetooth antenna 2 - interference
B200041Ctrl. module faulty
B200043Control unit – function restriction
B200087Control module, Software incompatible
B200100Control unit – wrong software version
B200500Coding
B201200Coding

All 31 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.