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U12DD00 — Instrument cluster control module, received malfunction value

Instrument cluster control module, received malfunction value. 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 U12DD00

Porsche 911 (992)

Engine Control Module 1MIB2 (Zentralrechner)

Porsche Panamera (971, 2017–2023)

MIB2 (Zentralrechner)

Porsche Cayenne (9YA)

Engine Control Module 1MIB2 (Zentralrechner)

How to read and clear U12DD00

  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 U12DD00 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 Engine Control Module 1

U115000Rear spoiler adjustment control module, No communication
U115100Rear spoiler adjustment control module, implausible message
U115600Ctrl. module for rear-wheel drive, No communication
U115700Ctrl. module for rear-wheel drive, implausible message
U120000Data bus, Faulty
U122900Implausible front camera for driver assistance systems
U140A00Terminal 30 supply voltage – open circuit
U141B00Function restriction due to special software
U145700Control unit for driver assistance systems - signal implausible
U300100Control unit – run-on fault
U350100Engine electronics (DME) control unit – voltage on terminal 30 too low
U350200Engine electronics (DME) control unit – voltage on terminal 30 too high

All 221 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.