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U14C200 — Control unit function monitoring, RTM – no communication

Control unit function monitoring, RTM – 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 U14C200

Porsche Taycan

Infotainment Interface

Porsche 911 (992)

Infotainment Interface

Porsche Panamera (971, 2017–2023)

Infotainment Interface

Porsche Panamera (972, 2024–)

Infotainment Interface

Porsche Cayenne (9YA)

Infotainment Interface

How to read and clear U14C200

  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 U14C200 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 Infotainment Interface

U101200Supply voltage – too high
U101400Coding
U110300Production mode active
U110400Expanded bus operation active
U112100Data bus - missing message
U149E00Hybrid CAN bus – faulty

All 10 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.