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U112300 — Data bus – fault value received

Data bus – fault value received. 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 U112300

Porsche Taycan

Exterior Sound ActuatorSound ActuatorAdaptive Cruise ControlAerodynamics Control UnitAirbagAir ConditioningOn-Board Charger 2On-Board ChargerBattery Energy Control ModuleBrake ElectronicsRear View CameraCentral ElectricsComfort System ModuleChassis ControlSunroof Control ModuleLane Change Assist 2Instrument ClusterDC/DC Converter 2DC/DC ConverterDeck Lid Control UnitEngine Control Module 1Front Corner Radar 1Front Corner Radar 2Front Assist CameraGatewayGear Shift Control ModuleLane Change AssistLaser ScannerLight Control LeftLight Control RightLock ElectronicsNight Vision AssistRear Axle SteeringRoll Control SystemSeat Module, DriverSeat Module, PassengerSound SystemSteering AssistSteering Column ElectronicsTelematics Communication UnitThermal ManagementTyre Pressure MonitorTrailer Function

Porsche 911 (992)

SoundaktuatorACC (Abstandsregelung)Aerodynamics Control UnitSC (Airbag)All-Wheel Drive ControlBrake ElectronicsRueckfahrkameraBCM1 (Body Control Module 1)BCM2 (Body Control Module 2)Chassis ControlSAD (Schiebedach)SWA2 (Spurwechselassistent 2)Kombi LGPADM (Dynamische Aggregatelagerung)Convertible Top Control UnitEngine Control Module 1Lift VA (Lift Vorderachse)ZFAS (Zentrales Fahrer Assistenz System)GatewayWH (Waehlhebel)MIB2 (Zentralrechner)SWA (Spurwechselassistent)Light Control LeftLight Control RightNightVision (Waermebildkamera)Rear Axle SteeringSeat Module, DriverSeat Module, PassengerDSP (Audioverstaerker)Steering AssistSteering Column ElectronicsELV – Electric Steering LockTelematics Communication UnitTME (Thermomanagement)RDK (Reifendruckkontrolle)VTS (Diebstahlverfolgungssystem)WCU – Water Tank Control Unit

Porsche Panamera (971, 2017–2023)

Exterior Sound ActuatorSoundaktuatorACC2 (Abstandsregelung 2)PACCh (Berechnung optimale Fahrstrategie)ACC (Abstandsregelung)Aerodynamics Control UnitSC (Airbag)Air ConditioningAuxiliary HeaterOn-Board ChargerBrake ElectronicsRueckfahrkameraBCM1 (Body Control Module 1)BCM2 (Body Control Module 2)Chassis ControlSAD2 (Schiebedach2)SAD (Schiebedach)SWA2 (Spurwechselassistent 2)KombiDCDC 48V (Spannungswandler 48V)HDSG (Heckdeckel)Engine Control Module 1BVS (Bildverarbeitungssystem)GatewayWH (Waehlhebel)MIB2 (Zentralrechner)SWA (Spurwechselassistent)Light Control LeftLCM_L (Lichtsteuerung links)Light Control RightLCM_R (Lichtsteuerung rechts)GQS (Quersperre)DVD WechslerNight Vision AssistRear Axle SteeringSCR (Reduktionsmittel-Dosiersystem)Seat Module, DriverSeat Module, PassengerSeat Control Module, Rear Driver SideSeat Control Module, Rear Passenger SideDSP (Audioverstaerker)Steering AssistSteering Column ElectronicsELV – Electric Steering LockTelematics Communication UnitTME (Thermomanagement)RDK (Reifendruckkontrolle)AAG (Anhaenger)VTS (Diebstahlverfolgungssystem)

Porsche Panamera (972, 2024–)

Exterior Sound ActuatorSoundaktuatorACC (Abstandsregelung)Aerodynamics Control UnitSC (Airbag)Air ConditioningAuxiliary HeaterOn-Board ChargerBrake ElectronicsRueckfahrkameraBCM1 (Body Control Module 1)BCM2 (Body Control Module 2)Chassis ControlSAD2 (Schiebedach)SAD (Schiebedach)MRR_HL (Radar HL)Kombi LGHDSG (Heckdeckel)Engine Control Module 1MRR_VR (Radar VR)MRR_VL (Radar VL)ZFAS (Zentrales Fahrer Assistenz System)GatewayWH (Waehlhebel)MRR_HR (Radar HR)Light Control LeftLight Control RightGQS (Quersperre)NightVision (Waermebildkamera)Rear Axle SteeringeAWS1 (elektrische Aktive Wank Stabilisierung 1)Seat Module, DriverSeat Module, PassengerSeat Control Module, Rear Driver SideSeat Control Module, Rear Passenger SideDSP (Audioverstaerker)Steering AssistSteering Column ElectronicsELV – Electric Steering LockTelematics Communication UnitTME (Thermomanagement)RDK (Reifendruckkontrolle)AAG (Anhaenger)WCU – Water Tank Control Unit

Porsche Cayenne (9YA)

Exterior Sound ActuatorSoundaktuatorPACCh (Berechnung optimale Fahrstrategie)ACC (Abstandsregelung)Aerodynamics Control UnitSC (Airbag)Air ConditioningAll-Wheel Drive ControlAuxiliary HeaterOn-Board ChargerBrake ElectronicsRueckfahrkameraBCM1 (Body Control Module 1)BCM2 (Body Control Module 2)Chassis ControlSAD (Schiebedach)SWA2 (Spurwechselassistent 2)KombiDCDC 48V (Spannungswandler 48V)HDSG (Heckdeckel)Engine Control Module 1MRR_VR (Radar VR)MRR_VL (Radar VL)ZFAS (Zentrales Fahrer Assistenz System)GatewayWH (Waehlhebel)MIB2 (Zentralrechner)SWA (Spurwechselassistent)Light Control LeftLCM_L (Lichtsteuerung links)Light Control RightLCM_R (Lichtsteuerung rechts)GQS (Quersperre)DVD WechslerNight Vision AssistRear Axle SteeringSCR (Reduktionsmittel-Dosiersystem)Seat Module, DriverSeat Module, PassengerDSP (Audioverstaerker)Steering AssistSteering Column ElectronicsELV – Electric Steering LockTelematics Communication UnitTME (Thermomanagement)RDK (Reifendruckkontrolle)AAG (Anhaenger)Torque Converter (Transmission)VTS (Diebstahlverfolgungssystem)WCU – Water Tank Control Unit

How to read and clear U112300

  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 U112300 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 Exterior Sound Actuator

U101100Supply voltage – too low
U101200Supply voltage – too high
U10D900Control unit not installed correctly
U110300Production mode active
U112100Data bus - missing message
U112200Data bus - implausible message
U120000Data bus, Faulty
U120100Data bus, No communication
U140000Function restriction – supply voltage too low
U140100Function restriction – supply voltage too high
U18C800Data bus, Faulty
U1A5F00Acoustic Simulator (J943), unexpected restart

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.