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U128800 — Left footwell flap motor, No communication

Left footwell flap motor, 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 U128800

Porsche Taycan

Central Electrics

Porsche 911 (992)

BCM1 (Body Control Module 1)

Porsche Panamera (971, 2017–2023)

BCM1 (Body Control Module 1)

Porsche Panamera (972, 2024–)

BCM1 (Body Control Module 1)

Porsche Cayenne (9YA)

BCM1 (Body Control Module 1)

How to read and clear U128800

  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 U128800 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 →

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Other codes of the Central Electrics

U128200Rear air distribution door motor, No communication
U128300Rear air distribution door motor, implausible message
U128400Left center vent motor, No communication
U128500Left center vent motor, implausible message
U128600Right center vent motor, No communication
U128700Right center vent motor, implausible message
U128900Left footwell flap motor, implausible message
U128A00Right footwell flap motor, No communication
U128B00Right footwell flap motor, implausible message
U128C00Rear air quantity motor, No communication
U128D00Rear air quantity motor, implausible message
U128E00Actuator of the left shut-off flap of the B-pillar and footwell, No communication

All 1472 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.