Trailer Function: fault codes
All 112 fault codes of the Porsche Taycan Trailer Function with the manufacturer's names. How to read and clear them with STEUER14.
| Code | Fault |
|---|---|
| B105000 | Function restriction, temperature above limit value |
| B140D13 | Supply voltage for terminal 30 left – open circuit |
| B140E13 | Supply voltage for terminal 30 right – open circuit |
| B184C00 | Release active |
| B186C00 | Function restriction due to internal error |
| B1883F3 | Function restriction, due to insufficient voltage at terminal 30 left |
| B1883F4 | Function restriction, due to insufficient voltage at terminal 30 right |
| B1883F5 | Function restriction, due to insufficient voltage at terminal 30 switched |
| B1883F6 | Function restriction, due to insufficient voltage at terminal 30 charge cable |
| B1883F7 | Function restriction, due to insufficient voltage at terminal 30 for angular positioning |
| B1883F8 | Function restriction, due to excess voltage at terminal 30 left |
| B1883F9 | Function restriction, due to excess voltage at terminal 30 right |
| B1883FA | Function restriction, due to excess voltage at terminal 30 switched |
| B1883FB | Function restriction, due to excess voltage at terminal 30 charge cable |
| B1883FC | Function restriction, due to excess voltage at terminal 30 for angular positioning |
| B1996F0 | Terminal 30 power supply, switched, open circuit |
| B1996F1 | Terminal 30 power supply, Charge Cable, open circuit |
| B1996F2 | Terminal 30 power supply, for angular positioning, open circuit |
| B200009 | Ctrl. module faulty |
| B200044 | Control unit – function restriction |
| B200045 | Control unit – function restriction |
| B200046 | Control unit – function restriction |
| B200047 | Control unit – function restriction |
| B200049 | Control unit – function restriction |
| B200096 | Control unit – function restriction |
| B200500 | Coding |
| B201200 | Coding |
| B2F0100 | Development code 1 |
| B2F0200 | Development code 2 |
| B2F0300 | Development code 3 |
| B2F0400 | Development code 4 |
| B2F0500 | Development code 5 |
| C10DB11 | Lamp for tail light on trailer - short circuit to ground |
| C10DB15 | Lamp for tail light on trailer - open circuit/short circuit to B+ |
| C10E401 | Pivoting trailer hitch - electrical fault |
| C10E407 | Pivoting trailer hitch - mechanical fault |
| C10E412 | Pivoting trailer hitch - short circuit to B+ |
| C10E413 | Pivoting trailer hitch - open circuit |
| C10E429 | Pivoting trailer hitch - implausible signal |
| C10E454 | Pivoting trailer hitch - no basic setting |
| C10E511 | Trailer hitch switch - short circuit to ground |
| C10E512 | Trailer hitch switch - short circuit to B+ |
| C10E513 | Power pivoting trailer hitch button, Open circuit |
| C10E529 | Trailer hitch switch - implausible signal |
| C10E611 | Contact switch on shifting wheel - short circuit to ground |
| C10E612 | Contact switch on shifting wheel - short circuit to B+ |
| C10E613 | Handwheel contact switch, Open circuit |
| C10E711 | Contact switch on locking bolt - short circuit to ground |
| C10E712 | Contact switch on locking bolt - short circuit to B+ |
| C10E713 | Lock bolt contact switch, Open circuit |
| C10E729 | Lock bolt contact switch, Implausible signal |
| C10E813 | Trailer socket, Open circuit |
| C10E901 | Pin 10 outlet voltage supply, Electrical error |
| C10EA01 | Pin 9 outlet voltage supply, Electrical error |
| C10F311 | Lamp for brake light on trailer - short circuit to ground |
| C10F313 | Bulb for brake lamp on trailer, Open circuit |
| C10F315 | Lamp for brake light on trailer - open circuit/short circuit to B+ |
| C10F411 | Lamp for right tail light on trailer - short circuit to ground |
| C10F415 | Lamp for right tail light on trailer - open circuit/short circuit to B+ |
| C10F511 | Lamp for left tail light on trailer - short circuit to ground |
| C10F515 | Lamp for left tail light on trailer - open circuit/short circuit to B+ |
| C10F611 | Lamp for right direction indicator on trailer - short circuit to ground |
| C10F615 | Lamp for right direction indicator on trailer - open circuit/short circuit to B+ |
| C10F711 | Lamp for left direction indicator on trailer - short circuit to ground |
| C10F715 | Lamp for left direction indicator on trailer - open circuit/short circuit to B+ |
| C10F811 | Lamp for rear fog light on trailer - short circuit to ground |
| C10F911 | Output for activation of trailer brake - short circuit to ground |
| C10FA11 | Lamp for left brake light on trailer - short circuit to ground |
| C10FA15 | Lamp for left brake light on trailer - open circuit/short circuit to B+ |
| C10FB11 | Lamp for right brake light on trailer - short circuit to ground |
| C10FB15 | Lamp for right brake light on trailer - open circuit/short circuit to B+ |
| C10FC11 | Lamp for reversing light on trailer - short circuit to ground |
| C117904 | Pitch angle sensor, Faulty |
| C117907 | Pitch angle sensor, mechanical malfunction |
| C117916 | Pitch angle sensor, Voltage too low |
| C117917 | Pitch angle sensor, Voltage too high |
| C1179F0 | Pitch angle sensor, Sensor ring faulty |
| C1179F1 | Pitch angle sensor, Supply voltage, short circuit to ground |
| C119613 | Trailer hitch indicator light, Open circuit |
| C125D04 | Control module for trailer load and trailer nose recognition, Faulty |
| C125D16 | Control module for trailer load and trailer nose recognition, Voltage too low |
| C125D17 | Control module for trailer load and trailer nose recognition, Voltage too high |
| C125DF0 | Control module for trailer load and trailer nose recognition, Supply voltage, short circuit to ground |
| C125DF1 | Control module for trailer load and trailer nose recognition, Function restriction |
| C12EE92 | Sensor 1 for trailer load and trailer nose recognition, Malfunction |
| C12F692 | Sensor 2 for trailer load and trailer nose recognition, Malfunction |
| C12F7F0 | Basic setting , trailer load and load protection detection, Malfunction in basic settings |
| C12F8F0 | Test, acceleration sensor, Malfunction in basic settings |
| P057100 | Brake light switch - signal implausible |
| P175700 | Power supply (terminal 30) – open circuit |
| U001000 | Comfort CAN bus – defective |
| U001100 | Comfort CAN bus - no communication |
| U040100 | Engine electronics (DME) control unit – signal implausible |
| U041800 | Control unit for brake electronics (PSM) – signal implausible |
| U042200 | Front-end electronics control unit (BCM1) - signal implausible |
| U043100 | Data bus - fault value received |
| U101100 | Supply voltage – too low |
| U101200 | Supply voltage – too high |
| U101300 | Coding |
| U110300 | Production mode active |
| U111600 | Subnetwork operation not available |
| U112100 | Data bus - missing message |
| U112200 | Data bus - implausible message |
| U112300 | Data bus – fault value received |
| U115A00 | Pitch angle sensor, No communication |
| U115B00 | Pitch angle sensor, implausible message |
| U12D200 | Control module for trailer load and trailer nose recognition, No communication |
| U12D300 | Control module for trailer load and trailer nose recognition, implausible message |
| U140000 | Function restriction – supply voltage too low |
| U140100 | Function restriction – supply voltage too high |
| U140500 | Terminal 15 signal line – signal implausible |
| U155100 | Data bus, Received malfunction value |
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.