![Shift Valve – Audi R8 R-Tronic](https://www.sequparts.com/wp-content/uploads/2021/04/qpvppv-300x300.jpg)
Shift Valve – Audi R8 R-Tronic
The shift solenoid valves (marked with “PPV”) are responsible for changing the gears of the R-Tronic system. There are two of these valves on the actuator. Together with the on/off valve, they operate the shift actuator. If one of the valves is faulty, the car will refuse to go into one or more gears.