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B12BB11 — Right front side marker lamp bulb, Short circuit to ground
Right front side marker lamp bulb, 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 B12BB11
How to read and clear B12BB11
- 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 B12BB11 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 Central Electrics
| B12A21C | Right indirect ventilation door control motor, Voltage implausible |
| B12A221 | Right indirect ventilation door control motor, Lower limit not reached |
| B12A222 | Right indirect ventilation door control motor, Upper limit exceeded |
| B12A24B | Right indirect ventilation door control motor, Excess temp. |
| B12BA11 | Left front side marker lamp bulb, Short circuit to ground |
| B12BA15 | Left front side marker lamp bulb, Open circuit/short circuit to B+ |
| B12BB15 | Right front side marker lamp bulb, Open circuit/short circuit to B+ |
| B12D011 | Left turn signal light bulb, Short circuit to ground |
| B12D015 | Left turn signal light bulb, Open circuit/short circuit to B+ |
| B12D111 | Right turn signal light bulb, Short circuit to ground |
| B12D115 | Right turn signal light bulb, Open circuit/short circuit to B+ |
| B12E401 | Right air outlet illumination light, Electrical error |
All 1472 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.