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U101600 — Control unit for brake electronics (PSM) – signal implausible

Control unit for brake electronics (PSM) – signal implausible. 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 U101600

Porsche Taycan

Front Corner Radar 1Front Corner Radar 2Front Assist CameraLane Change AssistTelematics Communication Unit

Porsche 911 (992)

Engine Control Module 1ZFAS (Zentrales Fahrer Assistenz System)SWA (Spurwechselassistent)Telematics Communication Unit

Porsche Panamera (971, 2017–2023)

Engine Control Module 1SWA (Spurwechselassistent)Telematics Communication Unit

Porsche Panamera (972, 2024–)

Engine Control Module 1MRR_VR (Radar VR)MRR_VL (Radar VL)ZFAS (Zentrales Fahrer Assistenz System)MRR_HR (Radar HR)Telematics Communication Unit

Porsche Cayenne (9YA)

Engine Control Module 1MRR_VR (Radar VR)MRR_VL (Radar VL)ZFAS (Zentrales Fahrer Assistenz System)SWA (Spurwechselassistent)Telematics Communication UnitTorque Converter (Transmission)

How to read and clear U101600

  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 U101600 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 Front Corner Radar 1

U043500Data bus - missing message
U045200Airbag control unit - signal implausible
U101100Supply voltage – too low
U101200Supply voltage – too high
U101300Coding
U101400Coding
U103100FlexRay data bus, No synchronization
U106E00FlexRay data bus - signal error
U110000Component protection – not taught
U110100Component protection active
U110300Production mode active
U112100Data bus - missing message

All 33 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.