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B176D04 — Servo motor for center rear right horizontal vent – defective

Servo motor for center rear right horizontal vent – defective. The Taycan, 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 B176D04

Porsche Taycan

Air Conditioning

Porsche Panamera (971, 2017–2023)

Air Conditioning

Porsche Panamera (972, 2024–)

Air Conditioning

Porsche Cayenne (9YA)

Air Conditioning

How to read and clear B176D04

  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 B176D04 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 Air Conditioning

B174F09Servo motor for rear right air flow - component fault
B175B54Servomotors LIN1, not taught-in
B175C54Servomotors LIN2, not taught-in
B175D54Servomotors LIN4, not taught-in
B175E04Servo motor for right extended ventilation panel - faulty
B175E09Servo motor for right extended ventilation panel - component fault
B176D09Servo motor for center rear right horizontal vent – component fault
B176E04Servo motor for front left center horizontal vent – defective
B176E09Servo motor for front left center horizontal vent – component fault
B176F04Servo motor for center front left vertical vent – defective
B176F09Servo motor for front left center vertical vent – component fault
B177A04Servo motor for center front right vertical vent – defective

All 418 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.