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B120F12 — Passenger airbag ignition circuit discharge valve - short circuit to B+
Passenger airbag ignition circuit discharge valve - 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 B120F12
How to read and clear B120F12
- 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 B120F12 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
| B120E12 | Driver airbag release valve igniter, Short circuit to B+ |
| B120E1A | Driver airbag release valve igniter, Resistance too low |
| B120E1B | Driver airbag release valve igniter, Resistance too high |
| B120F00 | Passenger airbag ignition circuit discharge valve - equipment fault |
| B120F01 | Passenger airbag ignition circuit discharge valve - electrical fault |
| B120F11 | Passenger airbag ignition circuit discharge valve - short circuit to ground |
| B120F1A | Passenger airbag ignition circuit discharge valve - resistance too low |
| B120F1B | Passenger airbag ignition circuit discharge valve - resistance too high |
| B121400 | Seat occupancy detection control unit - function restriction, environmental influences |
| B122501 | Seat occupancy detection control unit, sensor – electrical fault |
| B122511 | Seat occupancy detection control unit, sensor – short circuit to ground |
| B122512 | Seat occupancy detection control unit, sensor – short circuit to B+ |
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.