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B12CA15 — License plate light – short circuit to B+ or open circuit
License plate light – short circuit to B+ or open circuit. 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 B12CA15
How to read and clear B12CA15
- 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 B12CA15 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
| B12C812 | Right rear fog light – short circuit to B+ |
| B12C813 | Right rear fog light – open circuit |
| B12C815 | Right rear fog light – short circuit to B+ or open circuit |
| B12CA11 | License plate light – short circuit to ground |
| B12CA12 | License plate light – short circuit to B+ |
| B12CA13 | License plate light – open circuit |
| B12CB11 | Left reversing light – short circuit to ground |
| B12CB12 | Left reversing light – short circuit to B+ |
| B12CB13 | Left reversing light – open circuit |
| B12CB15 | Left reversing light – short circuit to B+ or open circuit |
| B12CC11 | Right reversing light – short circuit to ground |
| B12CC12 | Right reversing light – short circuit to B+ |
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.