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B16D729 — Center right tail light – signal implausible

Center right tail light – signal implausible. 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 B16D729

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 B16D729

  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 B16D729 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

B16D711Center right tail light – short circuit to ground
B16D712Center right tail light – short circuit to B+
B16D713Center right tail light – open circuit
B16D715Center right tail light – short circuit to B+ or open circuit
B16D716Center right tail light, voltage too low
B16D717Center right tail light, voltage too high
B16D731Center right tail light – no communication
B16D7F0Center right tail light – design light defective
B16D7F1Center right tail light – LED module defective
B16D7F2Center right tail light – marker light defective
B16D7F3Center right tail light – brake light defective
B16D7F4Center right tail light – direction indicator defective

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.