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B18FC11 — Igniter for high-voltage battery 2 open circuit, Short circuit to ground
Igniter for high-voltage battery 2 open circuit, Short circuit to ground. 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 B18FC11
How to read and clear B18FC11
- 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 B18FC11 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 Airbag
| B182F53 | Assistance System Monitor (ASM) - deactivated |
| B184C00 | Release active |
| B187CF0 | Porsche Active Safe (PAS) - function restriction, internal fault |
| B1896F0 | Crash data from electronic deactivation of high-voltage system, stored |
| B18FC00 | Igniter for high-voltage battery 2 open circuit |
| B18FC01 | Igniter for high-voltage battery 2 open circuit, Electrical malfunction |
| B18FC12 | Igniter for high-voltage battery 2 open circuit, Short circuit to B+ |
| B18FC1A | Igniter for high-voltage battery 2 open circuit, Resistance too low |
| B18FC1B | Igniter for high-voltage battery 2 open circuit, Resistance too high |
| B18FC53 | Igniter for high-voltage battery 2 open circuit, deactivated |
| B18FD00 | Seat occupancy sensor on driver’s side - equipment fault |
| B18FD01 | Driver side seat occupant detection sensor, Electrical malfunction |
All 723 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.