Home › Fault codes › U10C700

U10C700 — LIN bus 2 – no communication

LIN bus 2 – 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 U10C700

Porsche Taycan

Air ConditioningCentral ElectricsChassis ControlSeat Module, DriverSeat Module, PassengerThermal Management

Porsche 911 (992)

BCM1 (Body Control Module 1)Chassis ControlSeat Module, DriverSeat Module, PassengerTME (Thermomanagement)

Porsche Panamera (971, 2017–2023)

Air ConditioningBCM1 (Body Control Module 1)Chassis ControlSeat Module, DriverSeat Module, PassengerSeat Control Module, Rear Driver SideSeat Control Module, Rear Passenger SideTME (Thermomanagement)

Porsche Panamera (972, 2024–)

Air ConditioningBCM1 (Body Control Module 1)Chassis ControlSeat Module, DriverSeat Module, PassengerSeat Control Module, Rear Driver SideSeat Control Module, Rear Passenger SideTME (Thermomanagement)

Porsche Cayenne (9YA)

Air ConditioningBCM1 (Body Control Module 1)Chassis ControlSeat Module, DriverSeat Module, PassengerTME (Thermomanagement)

How to read and clear U10C700

  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 U10C700 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 Air Conditioning

U104700Rear lid control unit - no communication
U107600LIN bus 2 - electrical fault
U109800Convertible top control unit - no communication
U109900Electric auxiliary heater (12V) - no communication
U10A300Windshield wiper motor – no communication
U10BA00LIN bus 1 – no communication
U10C800LIN bus 3 - no communication
U10C900LIN bus 4 - no communication
U10DB00LIN bus 3 - electrical fault
U10DC00LIN bus 4 - electrical fault
U110300Production mode active
U110500Transport mode active

All 418 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.