DCDC 48V (Spannungswandler 48V): fault codes
All 18 fault codes of the Porsche Cayenne (9YA) DCDC 48V (Spannungswandler 48V) with the manufacturer's names. How to read and clear them with STEUER14.
| Code | Fault |
|---|---|
| B126B01 | Housing fan, Electrical error |
| B200094 | Control unit – function restriction |
| B200500 | Coding |
| B201200 | Coding |
| B202700 | Coding |
| B2F0100 | Development code 1 |
| B2F0200 | Development code 2 |
| B2F0400 | Development code 4 |
| C113E00 | Software error detected |
| C116300 | Development functions active |
| P0A9400 | Function limitation |
| U112100 | Data bus - missing message |
| U112200 | Data bus - implausible message |
| U112300 | Data bus – fault value received |
| U120100 | Data bus, No communication |
| U134F00 | Data bus – signal implausible |
| U140000 | Function restriction – supply voltage too low |
| U140100 | Function restriction – supply voltage too high |
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.