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C129929 — Matrix LED module - signal implausible
Matrix LED module - signal implausible. 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 C129929
How to read and clear C129929
- 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 C129929 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
| C1283FB | Auxiliary headlight – short circuit |
| C1283FC | Auxiliary headlight – function restriction due to overtemperature |
| C1283FD | Auxiliary headlight – function restriction due to undertemperature |
| C128F13 | Supply for laser beam, Open circuit |
| C1293F0 | Sensors for laser beam, Supply voltage electrical malfunction |
| C129901 | Matrix LED module - electrical fault |
| C12C101 | Bulb for daytime running lamps, Electrical malfunction |
| C133EF0 | Position sensor for dynamic cornering light - signal implausible |
| C133F01 | Side direction indicator light – electrical fault |
| C134001 | Design light – electrical fault |
| C134013 | Design light – open circuit |
| C1340F0 | Design light, coding resistance – electrical fault |
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.