Home › Fault codes › B178AF0
B178AF0 — Lid emergency release – equipment implausible
Lid emergency release – equipment 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 B178AF0
How to read and clear B178AF0
- Plug a standard ENET (Ethernet-to-OBD) cable into your Porsche's OBD port and your Mac or Windows PC.
- Open STEUER14, pick your car and run a fault scan: every control unit is read, and B178AF0 shows with its status, its full description and the freeze frame when the unit stores one.
- 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 readingOther codes of the Comfort System Module
| B176B16 | Antenna 3 for near-field communication, Voltage too low |
| B176B17 | Antenna 3 for near-field communication, voltage too high |
| B176C01 | Bulb for outside door handle illumination, Electrical malfunction |
| B176C16 | Bulb for outside door handle illumination, Voltage too low |
| B176C17 | Bulb for outside door handle illumination, voltage too high |
| B176C98 | Bulb for outside door handle illumination, Temperature too high |
| B179529 | Front passenger-side door central locking button – signal implausible |
| B179729 | Front passenger lock cylinder contact switch, Implausible signal |
| B179829 | Rear driver-side door central locking button – signal implausible |
| B179929 | Rear passenger-side door central locking button – signal implausible |
| B17F211 | Seat ventilation relay – short circuit to ground |
| B17F215 | Seat ventilation relay – short circuit to B+ or open 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.