SCR (Reduktionsmittel-Dosiersystem): fault codes
All 20 fault codes of the Porsche Cayenne (9YA) SCR (Reduktionsmittel-Dosiersystem) with the manufacturer's names. How to read and clear them with STEUER14.
| Code | Fault |
|---|---|
| B200000 | Control unit – function restriction |
| B200043 | Control unit – function restriction |
| B200044 | Control unit – function restriction |
| B200045 | Control unit – function restriction |
| B200046 | Control unit – function restriction |
| B200047 | Control unit – function restriction |
| B200500 | Coding |
| B200600 | Control module does not match vehicle |
| B200FF0 | Control unit – function restriction |
| B201200 | Coding |
| U101100 | Supply voltage – too low |
| U101200 | Supply voltage – too high |
| U110300 | Production mode active |
| U110400 | Expanded bus operation active |
| U112100 | Data bus - missing message |
| U112200 | Data bus - implausible message |
| U112300 | Data bus – fault value received |
| U120000 | Data bus, Faulty |
| 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.