Home › Fault codes › P069900
P069900 — Sensor voltage 3 - short circuit to B+
Sensor voltage 3 - short circuit to B+. 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 P069900
How to read and clear P069900
- 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 P069900 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 Engine Control Module 1
| P068500 | Main relay, control line - open circuit |
| P068600 | Main relay, control line - short circuit to ground |
| P068700 | Main relay, control line - short circuit to B+ |
| P068A00 | Main relay - opens too early after engine start |
| P068B00 | ECM/PCM Power Relay De-Energized Performance - Too Late |
| P069800 | Sensor voltage 3 - short circuit to ground |
| P06E900 | Starter does not turn, Mechanically blocked or electrical malfunction |
| P06EF00 | Engine Restart Performance |
| P071000 | Temperature sensor (transmission oil) - electrical fault |
| P071100 | (Transmission oil) temperature sensor – implausible signal |
| P072100 | Speed sensor, transmission output – signal implausible |
| P078000 | Shift monitoring |
All 274 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.