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B18D3F1 — Functions which can be activated, Communication between control modules aborted
Functions which can be activated, Communication between control modules aborted. 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 B18D3F1
How to read and clear B18D3F1
- 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 B18D3F1 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 →
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| B18D3F2 | Functions which can be activated, Invalid control module configuration |
| B18D3F3 | Functions which can be activated, faulty vehicle configuration |
| B18D3F4 | Function activation – authentication failed |
| B18D3F5 | Functions which can be activated, All FS IDs invalid due to unreliable time |
| B199AF0 | Online remote update – software version inconsistent |
| B200009 | Ctrl. module faulty |
All 374 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.