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P33E400 — Combination charging socket, communication error
Combination charging socket, communication error. 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 P33E400
How to read and clear P33E400
- 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 P33E400 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
| P33DE00 | Rated current request of high-voltage battery, too high |
| P33DF00 | High-voltage charger, line conductor – setpoint current requirement too low |
| P33E000 | High-voltage charger, line conductor - required/actual current difference too high |
| P33E100 | Charging socket AC, electrical fault |
| P33E200 | Combination charging socket - electrical fault |
| P33E300 | Charging socket AC, communication error |
| P33E500 | Quick battery charging (DC), Charge stn., initialization error |
| P33E600 | Charging socket AC charging-plug lock, short circuit to ground |
| P33E700 | Combination charging socket charging-plug lock, short circuit to ground |
| P33E800 | Charging socket AC charging-plug lock, mechanical fault |
| P33E900 | Combination charging socket charging-plug lock, mechanical fault |
| P33EA00 | High-voltage battery charging – fault in vehicle high-voltage system |
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.