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B1678F0 — Radio key – not synchronized
Radio key – not synchronized. 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 B1678F0
How to read and clear B1678F0
- 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 B1678F0 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 Comfort System Module
| B15F813 | Antenna for central locking system – open circuit |
| B166E04 | Windshield heater relay – defective |
| B166E16 | Windshield heater relay – voltage too low |
| B166E17 | Windshield heater relay – voltage too high |
| B166E29 | Windshield heating relay – signal implausible |
| B166E31 | Windshield heater relay – no signal |
| B169011 | Tailgate proximity sensor control unit, supply voltage – short circuit to ground |
| B169154 | Central locking – not taught |
| B16C304 | Left tail lamp, faulty |
| B16C311 | Left tail lamp, Short circuit to Ground (GND) |
| B16C312 | Left tail lamp, Short circuit to B+ |
| B16C313 | Left tail lamp, Open circuit |
All 616 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.