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P32B300 — Control unit – Function limitation
Control unit – Function limitation. 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 P32B300
How to read and clear P32B300
- 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 P32B300 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
| P1FFE00 | Internal voltage sensor 1 – signal implausible |
| P326C00 | Terminal 30 – defective |
| P32A100 | Control unit – Function limitation |
| P32A800 | HV voltage converter - function limitation due to undervoltage (12 V) |
| P32AD00 | HV voltage converter - function limitation due to undervoltage (12 V) |
| P32B200 | High-voltage voltage converter, voltage sensor, below minimum |
| U002800 | Hybrid CAN bus – faulty |
| U002900 | Hybrid CAN bus - no communication |
| U101100 | Supply voltage – too low |
| U101200 | Supply voltage – too high |
| U110000 | Component protection – not taught |
| U110100 | Component protection active |
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.