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U018300 — Lost Communication With Lighting Control Module Rear

Lost Communication With Lighting Control Module Rear. 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 U018300

Porsche Taycan

Gateway

Porsche 911 (992)

Gateway

Porsche Panamera (971, 2017–2023)

Gateway

Porsche Panamera (972, 2024–)

Gateway

Porsche Cayenne (9YA)

Gateway

How to read and clear U018300

  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 U018300 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 Gateway

U014A00Lost Communication With Battery Energy Control Module "C"
U014B00Gateway – incorrect signal
U015100Airbag control unit - missing message
U015500Instrument cluster control unit - missing message
U016400Air conditioner control unit - missing message
U016600Auxiliary heater control unit - no communication
U019900Driver-side door control unit - no communication
U019B00High-voltage charger (OBC) control unit – missing message
U020000Door control unit, passengerʼs side - no communication
U020700Control unit for front panoramic roof - no communication
U020800Lost Communication With “Seat Control Module A”
U020900Lost Communication With “Seat Control Module B”

All 374 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.