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U12AB00 — Auxiliary display/control unit 1, No communication

Auxiliary display/control unit 1, No communication. 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 U12AB00

Porsche Taycan

Information Control Unit

Porsche 911 (992)

MIB2 (Zentralrechner)

Porsche Panamera (971, 2017–2023)

MIB2 (Zentralrechner)

Porsche Panamera (972, 2024–)

MIB3 (Zentralrechner)

Porsche Cayenne (9YA)

MIB2 (Zentralrechner)

How to read and clear U12AB00

  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 U12AB00 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 Information Control Unit

U122E00Ethernet databus branch 3, No communication
U122F00Ethernet databus branch 4, No communication
U123000Ethernet databus branch 5, No communication
U123100Ethernet databus branch 6, No communication
U123200Ethernet databus branch 7, No communication
U123300Ethernet databus branch 8, No communication
U12AD00Charging device 1 for mobile end devices, No communication
U12AF00Charging device 2 for mobile end devices, No communication
U12C800MAC address conflict in Ethernet switch branch 1
U12C900MAC address conflict in Ethernet switch branch 2
U12CA00MAC address conflict in Ethernet switch branch 3
U12CB00MAC address conflict in Ethernet switch branch 4

All 614 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.