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U10D100 — Central computer - Optical data bus, open circuit

Central computer - Optical data bus, open circuit. The 911 (992), Panamera (971) 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 U10D100

Porsche 911 (992)

MIB2 (Zentralrechner)

Porsche Panamera (971, 2017–2023)

MIB2 (Zentralrechner)

Porsche Cayenne (9YA)

MIB2 (Zentralrechner)

How to read and clear U10D100

  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 U10D100 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 MIB2 (Zentralrechner)

U10CA00Central computer - Optical data bus, sporadic open circuit
U10CC00Amplifier - Optical data bus, sporadic open circuit
U10CD00TV tuner - Optical data bus, sporadic open circuit
U10CE00DVD autochanger - Optical data bus, sporadic open circuit
U10CF00Instrument cluster - Optical data bus, sporadic open circuit
U10D000Rear Seat Entertainment - Optical data bus, sporadic open circuit
U10D300Amplifier - Optical data bus, Digital, open circuit
U10D400TV tuner - Optical data bus, open circuit
U10D500DVD autochanger - Optical data bus, open circuit
U10D600Instrument cluster - Optical data bus, open circuit
U10D700Rear Seat Entertainment - Optical data bus, open circuit
U10D800Line for ring break diagnosis - short circuit to ground

All 668 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.