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C145021 — Control unit – function restriction

Control unit – function restriction. 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 C145021

Porsche Taycan

DC/DC Converter

How to read and clear C145021

  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 C145021 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 →

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Other codes of the DC/DC Converter

C1381F1High-voltage voltage converter - function restriction due to undervoltage (800 V)
C1381F2High-voltage voltage converter - function restriction due to undervoltage (400 V)
C139549Control unit – Function limitation
C13F621High-voltage voltage converter, supply voltage sensor, below minimum
C13F622Control unit – function restriction
C145001Control unit – function restriction
C145022Control unit – function restriction
C145101Control unit – function restriction
C145111Control unit – Function limitation
C145112Control unit – Function limitation
C145117Control unit – Function limitation
C145121Control unit – Function limitation

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.