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`B201200` — Coding

Coding. 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 B201200

Porsche Taycan

Exterior Sound Actuator Sound Actuator Adaptive Cruise Control Aerodynamics Control Unit Airbag Air Conditioning Antenna Control Module On-Board Charger 2 On-Board Charger Battery Energy Control Module Matrix Headlamp Left Matrix Headlamp Right Rear Operating Unit Rear View Camera Central Electrics Comfort System Module Chassis Control Sunroof Control Module Digital Matrix Light Unit Lane Change Assist 2 DC/DC Converter Deck Lid Control Unit Door Module, Driver Door Module, Passenger Door Module, Rear Driver Door Module, Rear Passenger Driver Monitoring System Front Corner Radar 1 Front Corner Radar 2 Front Assist Camera Gateway Information Control Unit Lane Change Assist Laser Scanner Light Control Left Light Control Right Lock Electronics Roll Control System Seat Module, Driver Seat Module, Passenger Sound System Steering Assist Telematics Communication Unit Thermal Management Tyre Pressure Monitor Trailer Function

Porsche 911 (992)

Soundaktuator ACC (Abstandsregelung)Aerodynamics Control Unit SC (Airbag)DDA (Digitale Dachantenne)Battery Energy Control Module Beamer Module Matrix Headlamp Left Beamer Module Matrix Headlamp Right BedienSG_vo (Bedieneinheit vorne)Rueckfahrkamera BCM1 (Body Control Module 1)BCM2 (Body Control Module 2)Chassis Control SAD (Schiebedach)Control Unit Digital Matrix Light (ZDML)SWA2 (Spurwechselassistent 2)Kombi LG Tuer_FS (Tuere vorne Fahrerseite)Tuer_BFS (Tuere vorne Beifahrerseite)Driver Monitoring System 2 Convertible Top Control Unit Engine Control Module 1 Lift VA (Lift Vorderachse)ZFAS (Zentrales Fahrer Assistenz System)Gateway MIB2 (Zentralrechner)SWA (Spurwechselassistent)Light Control Left Light Control Right Rear Axle Steering Seat Module, Driver Seat Module, Passenger DSP (Audioverstaerker)Steering Assist Telematics Communication Unit TME (Thermomanagement)RDK (Reifendruckkontrolle)VTS (Diebstahlverfolgungssystem)WCU – Water Tank Control Unit

Porsche Panamera (971, 2017–2023)

Exterior Sound Actuator Soundaktuator ACC2 (Abstandsregelung 2)PACCh (Berechnung optimale Fahrstrategie)ACC (Abstandsregelung)Aerodynamics Control Unit SC (Airbag)Air Conditioning Auxiliary Heater On-Board Charger 48 V Battery Management System Battery Energy Control Module BedienSG_hi (Bedieneinheit hinten)BedienSG_vo (Bedieneinheit vorne)EBKV (Bremskraftverstaerker)Rueckfahrkamera BCM1 (Body Control Module 1)BCM2 (Body Control Module 2)Chassis Control SAD2 (Schiebedach2)SAD (Schiebedach)SWA2 (Spurwechselassistent 2)Kombi DCDC 48V (Spannungswandler 48V)HDSG (Heckdeckel)Door Module, Driver Door Module, Passenger Door Module, Rear Driver Door Module, Rear Passenger BVS (Bildverarbeitungssystem)Gateway MIB2 (Zentralrechner)SWA (Spurwechselassistent)Light Control Left LCM_L (Lichtsteuerung links)Light Control Right LCM_R (Lichtsteuerung rechts)GQS (Quersperre)SCR (Reduktionsmittel-Dosiersystem)eAWS1 (elektrische Aktive Wank Stabilisierung 1)Seat Module, Driver Seat Module, Passenger Seat Control Module, Rear Driver Side Seat Control Module, Rear Passenger Side DSP (Audioverstaerker)Steering Assist Telematics Communication Unit TME (Thermomanagement)RDK (Reifendruckkontrolle)AAG (Anhaenger)VTS (Diebstahlverfolgungssystem)

Porsche Panamera (972, 2024–)

Exterior Sound Actuator Soundaktuator ACC (Abstandsregelung)Aerodynamics Control Unit SC (Airbag)Air Conditioning DDA (Digitale Dachantenne)Auxiliary Heater On-Board Charger Battery Energy Control Module Beamer Module Matrix Headlamp Left Beamer Module Matrix Headlamp Right BedienSG_hi (Bedieneinheit hinten)BedienSG_vo (Bedieneinheit vorne)Rueckfahrkamera BCM1 (Body Control Module 1)BCM2 (Body Control Module 2)Chassis Control SAD2 (Schiebedach)SAD (Schiebedach)Control Unit Digital Matrix Light (ZDML)MRR_HL (Radar HL)HDSG (Heckdeckel)Tuer_FS (Tuere vorne Fahrerseite)Tuer_BFS (Tuere vorne Beifahrerseite)Tuer_FSh (Tuere hinten Fahrerseite)Tuer_BFSh (Tuere hinten Beifahrerseite)Driver Monitoring System 2 MRR_VR (Radar VR)MRR_VL (Radar VL)ZFAS (Zentrales Fahrer Assistenz System)Gateway Image Processing Electronics MIB3 (Zentralrechner)MRR_HR (Radar HR)Light Control Left Light Control Right GQS (Quersperre)Seat Module, Driver Seat Module, Passenger Seat Control Module, Rear Driver Side Seat Control Module, Rear Passenger Side DSP (Audioverstaerker)Steering Assist Telematics Communication Unit TME (Thermomanagement)RDK (Reifendruckkontrolle)AAG (Anhaenger)WCU – Water Tank Control Unit

Porsche Cayenne (9YA)

Exterior Sound Actuator Soundaktuator PACCh (Berechnung optimale Fahrstrategie)ACC (Abstandsregelung)Aerodynamics Control Unit SC (Airbag)Air Conditioning DDA (Digitale Dachantenne)AEM – Active Engine Mounts Auxiliary Heater On-Board Charger 48 V Battery Management System Battery Energy Control Module Beamer Module Matrix Headlamp Left Beamer Module Matrix Headlamp Right BedienSG_hi (Bedieneinheit hinten)BedienSG_vo (Bedieneinheit vorne)EBKV (Bremskraftverstaerker)Rueckfahrkamera BCM1 (Body Control Module 1)BCM2 (Body Control Module 2)Chassis Control SAD (Schiebedach)Control Unit Digital Matrix Light (ZDML)SWA2 (Spurwechselassistent 2)Kombi DCDC 48V (Spannungswandler 48V)HDSG (Heckdeckel)Door Module, Driver Door Module, Passenger Door Module, Rear Driver Door Module, Rear Passenger Driver Monitoring System 2 MRR_VR (Radar VR)MRR_VL (Radar VL)ZFAS (Zentrales Fahrer Assistenz System)Gateway MIB2 (Zentralrechner)SWA (Spurwechselassistent)Light Control Left LCM_L (Lichtsteuerung links)Light Control Right LCM_R (Lichtsteuerung rechts)GQS (Quersperre)SCR (Reduktionsmittel-Dosiersystem)eAWS1 (elektrische Aktive Wank Stabilisierung 1)Seat Module, Driver Seat Module, Passenger DSP (Audioverstaerker)Steering Assist Telematics Communication Unit TME (Thermomanagement)RDK (Reifendruckkontrolle)AAG (Anhaenger)VTS (Diebstahlverfolgungssystem)WCU – Water Tank Control Unit

How to read and clear B201200

Plug a standard ENET (Ethernet-to-OBD) cable into your Porsche's OBD port and your Mac or Windows PC.
Open STEUER14, pick your car and run a fault scan: every control unit is read, and B201200 shows with its status, its full description and the freeze frame when the unit stores one.
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 →

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Other codes of the Exterior Sound Actuator

B177413	Lineout, Open circuit
B1774F0	Lineout, Short circuit to each other
B184C00	Release active
B200000	Control unit – function restriction
B200500	Coding
B2008F0	Function restriction, temperature – above limit value
B203400	Warning – overtemperature
B203500	Control unit, part number implausible
C104A4B	Temperature - above limit value
C113C01	Acoustic simulator - electrical fault
C113C13	Acoustic simulator - open circuit
C125E07	Exterior acoustics button – mechanical fault

All 50 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.