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P1FD400 — Terminal 30 – defective

Terminal 30 – defective. The Taycan 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 P1FD400

Porsche Taycan

DC/DC Converter

How to read and clear P1FD400

  1. Plug a standard ENET (Ethernet-to-OBD) cable into your Porsche's OBD port and your Mac or Windows PC.
  2. Open STEUER14, pick your car and run a fault scan: every control unit is read, and P1FD400 shows with its status, its full description and the freeze frame when the unit stores one.
  3. 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 reading

Other codes of the DC/DC Converter

P1DF900Control unit – Function limitation
P1E0E00Internal voltage sensor 1 – signal implausible
P1EF200Control unit – Function limitation
P1EF300Control unit – function restriction
P1EF400Control unit – function restriction
P1FD300Terminal 30 – defective
P1FEF00Control unit – function restriction
P1FF000Control unit – function restriction
P1FF600Internal voltage sensor 2 – signal implausible
P1FF700Internal voltage sensor 2 – signal implausible
P1FF800Control unit – function restriction
P1FF900Control unit – function restriction

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.