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B184A04 — Visibility sensor, faulty

Visibility sensor, faulty. 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 B184A04

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 B184A04

  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 B184A04 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 Central Electrics

B182329Button for side view camera, Implausible signal
B1836F0Park Assist – internal fault
B1836F1Front display and operator control unit, PCM – ParkAssist status implausible
B183B11Indicator lamp for steering wheel heater, Short circuit to Ground (GND)
B183B15Indicator lamp for steering wheel heater, Open circuit/short circuit to B+
B183FF0All ParkAssist sensors – icy/dirty
B185004Ctrl. motor for instrument panel vents, Faulty
B185007Ctrl. motor for instrument panel vents, mechanical malfunction
B18501CCtrl. motor for instrument panel vents, Voltage implausible
B185021Ctrl. motor for instrument panel vents, Lower limit not reached
B185022Ctrl. motor for instrument panel vents, Upper limit exceeded
B18504BCtrl. motor for instrument panel vents, Excess temp.

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.