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B1C4012 — External loudspeaker – short circuit to B+
External loudspeaker – short circuit to B+. The Taycan, 911 (992), 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 B1C4012
How to read and clear B1C4012
- 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 B1C4012 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 Instrument Cluster
| B1C3A92 | Dimming function sensor in instrument cluster – malfunction |
| B1C3B92 | Access to external storage medium – malfunction |
| B1C3CF0 | Exit Alert/Rear Cross Traffic Alert not available display active |
| B1C3D93 | Left operator control unit – does not function |
| B1C3E93 | Right operator control unit – does not function |
| B1C4011 | External loudspeaker – short circuit to ground |
| B1C4013 | External loudspeaker – open circuit |
| B1C4016 | External loudspeaker – voltage too low |
| B1C4017 | External loudspeaker – voltage too high |
| B1C4019 | External loudspeaker, current draw – above limit value |
| B1C4092 | External speaker – malfunction |
| B1C4098 | External loudspeaker – temperature too high |
All 176 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.