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B193D22 — Control unit – Function limitation

Control unit – Function limitation. 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 B193D22

Porsche Taycan

DC/DC Converter 2DC/DC Converter

How to read and clear B193D22

  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 B193D22 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 2

B10AD00Reference voltage (AC) – above limit value
B139700Function restriction, crash signal
B16CE00Control unit, reset
B1883FDFunctional restriction – voltage supply to contactor implausible
B1A6E00Input current too great
B1A6F00Output current too great
B1A7E00Emergency shut-down
B1A7F00Active discharging
B200000Control unit – function restriction
B200087Control module, Software incompatible

All 34 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.