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U116700 — Power module for Matrix headlights - no communication
Power module for Matrix headlights - no communication. 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 U116700
How to read and clear U116700
- 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 U116700 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 Light Control Left
| U101100 | Supply voltage – too low |
| U101200 | Supply voltage – too high |
| U103000 | LIN bus 1 – electrical fault |
| U112100 | Data bus - missing message |
| U112200 | Data bus - implausible message |
| U112300 | Data bus – fault value received |
| U116800 | Power module for Matrix headlights - implausible message |
| U120000 | Data bus, Faulty |
| U120100 | Data bus, No communication |
| U130F00 | Module for external sensors, no communication |
| U131000 | Module for external sensors, implausible message |
| U140000 | Function restriction – supply voltage too low |
All 223 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.