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B172E12 — WLAN antenna - short circuit to B+

WLAN antenna - short circuit to B+. 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 B172E12

Porsche Taycan

Information Control UnitTelematics Communication Unit

Porsche 911 (992)

MIB2 (Zentralrechner)Telematics Communication Unit

Porsche Panamera (971, 2017–2023)

MIB2 (Zentralrechner)Telematics Communication Unit

Porsche Panamera (972, 2024–)

MIB3 (Zentralrechner)Telematics Communication Unit

Porsche Cayenne (9YA)

MIB2 (Zentralrechner)Telematics Communication Unit

How to read and clear B172E12

  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 B172E12 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 Information Control Unit

B171A06Volume control for multimedia system, Software malfunction
B171AF0Volume control for multimedia system, Sticky button
B171B07Operator control unit in front center console - smartphone "App" button, mechanical fault
B171C07Operator control unit in front center console - "Home" start screen button, mechanical fault
B172D07Operator control unit in front center console - online service button, mechanical fault
B172E11WLAN antenna - short circuit to ground
B172E13WLAN antenna - open circuit
B1731F0Speaker channel 17, Polarity reversed
B1731F1Speaker channel 17, Acoustic error
B1732F0Speaker channel 18, Polarity reversed
B1732F1Speaker channel 18, Acoustic error
B1733F0Speaker channel 19, Polarity reversed

All 614 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.