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B103A12 — Ignition module lid lock on front driverʼs side - short circuit to B+
Ignition module lid lock on front driverʼs side - 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 B103A12
How to read and clear B103A12
- 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 B103A12 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
| B103912 | Ignition module lid hinge on front passengerʼs side - short circuit to B+ |
| B10391A | Ignition module lid hinge on front passenger’s side - resistance too low |
| B10391B | Ignition module lid hinge on front passenger’s side - resistance too high |
| B103A00 | Ignition module lid lock on front driverʼs side - equipment fault |
| B103A01 | Ignition module lid lock on front driverʼs side - electrical fault |
| B103A11 | Ignition module lid lock on front driverʼs side - short circuit to ground |
| B103A1A | Ignition module lid lock on front driverʼs side - resistance too low |
| B103A1B | Ignition module lid lock on front driverʼs side - resistance too high |
| B104200 | Belt buckle switch on rear driverʼs side – equipment fault |
| B104201 | Driver side second row seat belt switch, Electrical error |
| B104211 | Belt buckle switch on rear driverʼs side - short circuit to ground |
| B104212 | Driver side second row seat belt switch, 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.