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U011100 — LIN bus, battery sensor - no communication

LIN bus, battery sensor - no communication. The 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 U011100

Porsche 911 (992)

Battery Energy Control ModuleDC/DC Converter Control Module HVEngine Control Module 1

Porsche Panamera (971, 2017–2023)

Battery Energy Control Module

Porsche Panamera (972, 2024–)

Battery Energy Control ModuleDC/DC Converter Control Module HV

Porsche Cayenne (9YA)

Battery Energy Control ModuleDC/DC Converter Control Module HVEngine Control Module 1

How to read and clear U011100

  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 U011100 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 Battery Energy Control Module

U002900Hybrid CAN bus - no communication
U003700Vehicle Communication Bus B
U003800Private CAN bus, no communication
U010000Engine electronics (DME) control unit – no communication
U010100Lost Communication with TCM
U011000High-voltage power electronics control unit - no communication
U011200High-voltage battery control unit – no communication
U011600Thermal management control unit - missing message
U012100Brake electronics (PSM) control unit – no communication
U012200Brake electronics (PSM) control unit – missing message
U014000Front-end electronics control unit (BCM1) - missing message
U014100Front-end electronics control unit (BCM1) - no communication

All 205 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.