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P0EA300 — Control unit – function restriction
Control unit – function restriction. 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 P0EA300
How to read and clear P0EA300
- 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 P0EA300 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 DC/DC Converter
| P0E5400 | DC/DC converter current sensor, short circuit to B+ |
| P0E9700 | High-voltage voltage converter, voltage sensor, below minimum |
| P0E9800 | High-voltage voltage converter, voltage sensor, below minimum |
| P0E9900 | High-voltage voltage converter, voltage sensor, below minimum |
| P0E9D00 | DC/DC converter current sensor 2 - short circuit to ground |
| P0E9E00 | DC/DC converter, current sensor 2 - short circuit to B+ |
| P178E00 | Compressor for level control, Temperature too high |
| P1B3D00 | Control unit – Function limitation |
| P1CC400 | Control unit - function restriction |
| P1D7E00 | Terminal 30 – defective |
| P1D8100 | Internal voltage sensor 1 – signal implausible |
| P1D8200 | Internal voltage sensor 1 – signal implausible |
All 200 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.