Auxiliary Heater: fault codes
All 26 fault codes of the Porsche Panamera (972, 2024–) Auxiliary Heater with the manufacturer's names. How to read and clear them with STEUER14.
| Code | Fault |
|---|---|
| B105000 | Function restriction, temperature above limit value |
| B10C811 | Coolant switchover valve - short circuit to ground |
| B10CD00 | Function restriction due to energy management |
| B10D004 | Coolant pump - mechanical fault |
| B10D012 | Coolant pump, PWM line - short circuit to B+ |
| B10D031 | Coolant pump - no signal |
| B10D098 | Coolant pump - temperature too high |
| B10D0F0 | Coolant pump - dry run |
| B11D511 | Coolant pump - short circuit to ground or overload |
| B200000 | Control unit – function restriction |
| B200046 | Control unit – function restriction |
| B2000F4 | Function restriction |
| B200500 | Coding |
| B201000 | Calibration |
| B201200 | Coding |
| C109F00 | Coding |
| P056200 | Supply voltage - voltage too low |
| U101100 | Supply voltage – too low |
| U101200 | Supply voltage – too high |
| U103000 | LIN bus 1 – electrical fault |
| U112100 | Data bus - missing message |
| U112300 | Data bus – fault value received |
| U120000 | Data bus, Faulty |
| U120100 | Data bus, No communication |
| 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.