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B117312 — Antenna for start authorization and Comfort Access, rear trunk – short circuit to B+

Antenna for start authorization and Comfort Access, rear trunk – 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 B117312

Porsche Taycan

Comfort System Module

Porsche 911 (992)

BCM2 (Body Control Module 2)

Porsche Panamera (971, 2017–2023)

BCM2 (Body Control Module 2)

Porsche Panamera (972, 2024–)

BCM2 (Body Control Module 2)

Porsche Cayenne (9YA)

BCM2 (Body Control Module 2)

How to read and clear B117312

  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 B117312 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 Comfort System Module

B116EF1Door handle proximity sensor, rear right – play protection active
B117211Antenna for start authorization on front center console – short circuit to ground
B117212Antenna for start authorization, front center console – short circuit to B+
B117213Antenna for start authorization on front center console – open circuit
B1172F0Antenna for start authorization on front center console – mutual short circuit
B117311Antenna for start authorization and Comfort Access, rear trunk – short circuit to ground
B117313Antenna for start authorization and Comfort Access, rear trunk – open circuit
B1173F0Antenna for start authorization and Comfort Access, rear trunk – mutual short circuit
B117411Antenna for start authorization and Comfort Access, front trunk – short circuit to ground
B117412Antenna for start authorization and Comfort Access, front trunk – short circuit to B+
B117413Antenna for start authorization and Comfort Access, front trunk – open circuit
B1174F0Antenna for start authorization and Comfort Access, front trunk – mutual short circuit

All 616 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.