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B16D617 — Outer right tail light, voltage too high
Outer right tail light, voltage too high. 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 B16D617
How to read and clear B16D617
- 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 B16D617 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
| B16D604 | Outer right tail light – defective |
| B16D611 | Outer right tail light – short circuit to ground |
| B16D612 | Outer right tail light – short circuit to B+ |
| B16D613 | Outer right tail light – open circuit |
| B16D615 | Outer right tail light – short circuit to B+ or open circuit |
| B16D616 | Outer right tail light, voltage too low |
| B16D629 | Outer right tail light – signal implausible |
| B16D631 | Outer right tail light – no communication |
| B16D6F0 | Outer right tail light – design light defective |
| B16D6F1 | Outer right tail light – LED module defective |
| B16D6F2 | Outer right tail light – marker light defective |
| B16D6F3 | Outer right tail light – brake light defective |
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.