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P31C800 — Combination charging socket, AC electrical system supply – open circuit
Combination charging socket, AC electrical system supply – open circuit. The Taycan, 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 P31C800
How to read and clear P31C800
- 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 P31C800 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 On-Board Charger 2
| P1BCC00 | External charging infrastructure – fault in line conductor L2 and L3 |
| P1BCD00 | External charging infrastructure – fault in line conductor L1 and L3 |
| P1BCE00 | External charging infrastructure – fault in line conductor L1 and L2 |
| P31C500 | Reduced performance due to excessive coolant temperature |
| P31C600 | AC input voltage – electrical system fault |
| P31C700 | Charging socket AC, AC electrical system supply – open circuit |
| P31C900 | LED module charging socket A, Electrical error |
| P31CB00 | Immediate upload button, sticks closed |
| P31CC00 | Button for loading profile, sticks closed |
| P31CD00 | AC charge port door locking activation, electrical fault |
| P31CE00 | Combination charge port door locking activation, electrical fault |
| P31CF00 | Charging-socket lid A, locking detection, electrical fault |
All 110 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.