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B1916F5 — Backup battery, Service life exceeded
Backup battery, Service life exceeded. 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 B1916F5
How to read and clear B1916F5
- 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 B1916F5 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 Telematics Communication Unit
| B18F4F1 | Crash signal from airbag control module, permanently on high level |
| B18F4F2 | Crash signal from airbag control module, permanently on low level |
| B191604 | Backup battery, Faulty |
| B1916F0 | Backup battery, Critical charge level |
| B1916F1 | Backup battery, Not recognized |
| B1916F4 | Backup battery, Service life critical |
| B1A2FF1 | Bluetooth Low Energy antenna, communication error |
| B1A6711 | Mobile communications antenna 4 for emergency call module and communications unit, Short circuit to ground |
| B1A6712 | Mobile communications antenna 4 for emergency call module and communications unit, Short circuit to B+ |
| B1A6713 | Mobile communications antenna 4 for emergency call module and communications unit, Open circuit |
| B1A67F0 | LTE antenna 4 – incorrect installation detected |
| B1A9911 | Bluetooth antenna, low energy, Short circuit to ground |
All 157 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.