Home › Fault codes › B1853FC
B1853FC — Graphics unit - DTCP authentication error, signature
Graphics unit - DTCP authentication error, signature. The Taycan, 911 (992), Panamera (971), Panamera (972) and Cayenne 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 B1853FC
How to read and clear B1853FC
- Plug a standard ENET (Ethernet-to-OBD) cable into your Porsche's OBD port and your Mac or Windows PC.
- Open STEUER14, pick your car and run a fault scan: every control unit is read, and B1853FC shows with its status, its full description and the freeze frame when the unit stores one.
- 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 readingOther codes of the Information Control Unit
| B1853F4 | DVD autochanger - DTCP authentication error, certificate |
| B1853F5 | TV tuner - DTCP authentication error, certificate |
| B1853F6 | Amplifier - DTCP authentication error, certificate |
| B1853F7 | Rear Seat Entertainment - DTCP authentication error, certificate |
| B1853FA | Rear Seat Entertainment - DTCP authentication error, signature |
| B1853FB | Rear Seat Entertainment - DTCP authentication error, certificate |
| B186907 | Control unit for multimedia system Listen button, mechanical malfunction |
| B187007 | Multimedia system control head, Directory down button - mechanical error |
| B187107 | Multimedia system control head, Directory up button - mechanical error |
| B188507 | Operator control unit in front center console - numeric keypad button 7, mechanical fault |
| B188607 | Operator control unit in front center console - numeric keypad button 8, mechanical fault |
| B188707 | Operator control unit in front center console - left menu button, mechanical fault |
All 614 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.