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U101400 — 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 U101400

Porsche Taycan

Adaptive Cruise ControlBrake ElectronicsBrake BoosterCentral ElectricsComfort System ModuleChassis ControlDeck Lid Control UnitFront Corner Radar 1Information Control UnitInfotainment InterfaceLane Change AssistLaser ScannerRear Axle SteeringSound SystemSteering AssistTelematics Communication UnitTelematics Diagnostic Unit

Porsche 911 (992)

ACC (Abstandsregelung)All-Wheel Drive ControlBrake ElectronicsEBKV (Bremskraftverstaerker)BCM1 (Body Control Module 1)BCM2 (Body Control Module 2)Chassis ControlMIB2 (Zentralrechner)Infotainment InterfaceSWA (Spurwechselassistent)DSP (Audioverstaerker)Steering AssistTelematics Communication Unit

Porsche Panamera (971, 2017–2023)

ACC2 (Abstandsregelung 2)ACC (Abstandsregelung)Brake ElectronicsEBKV (Bremskraftverstaerker)BCM1 (Body Control Module 1)BCM2 (Body Control Module 2)Chassis ControlHDSG (Heckdeckel)BVS (Bildverarbeitungssystem)Headup DisplayMIB2 (Zentralrechner)Infotainment InterfaceSWA (Spurwechselassistent)Rear Axle SteeringDSP (Audioverstaerker)Steering AssistTelematics Communication UnitTelematics Diagnostic UnitTV Tuner

Porsche Panamera (972, 2024–)

ACC (Abstandsregelung)Brake ElectronicsEBKV (Bremskraftverstaerker)BCM1 (Body Control Module 1)BCM2 (Body Control Module 2)Chassis ControlHDSG (Heckdeckel)MRR_VR (Radar VR)HUD (Head Up Display)MIB3 (Zentralrechner)Infotainment InterfaceMRR_HR (Radar HR)Rear Axle SteeringDSP (Audioverstaerker)Steering AssistTelematics Communication UnitTelematics Diagnostic Unit

Porsche Cayenne (9YA)

ACC (Abstandsregelung)All-Wheel Drive ControlBrake ElectronicsEBKV (Bremskraftverstaerker)BCM1 (Body Control Module 1)BCM2 (Body Control Module 2)Chassis ControlHDSG (Heckdeckel)MRR_VR (Radar VR)HUD (Head Up Display)MIB2 (Zentralrechner)Infotainment InterfaceSWA (Spurwechselassistent)Rear Axle SteeringDSP (Audioverstaerker)Steering AssistTelematics Communication UnitTelematics Diagnostic Unit

How to read and clear U101400

  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 U101400 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 Adaptive Cruise Control

C12E0F1Congestion pilot, Function restriction
C12EBF3Laser for adaptive cruise control, Restricted range detection
U040100Engine electronics (DME) control unit – signal implausible
U101100Supply voltage – too low
U101200Supply voltage – too high
U101300Coding
U103100FlexRay data bus, No synchronization
U110000Component protection – not taught
U110100Component protection active
U110300Production mode active
U110400Expanded bus operation active
U110500Transport mode active

All 53 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.