Fault description
WARNING: This page does not describe the selected car, but rather 59 other vehicles, including the 2018 BMW X4, 2018 BMW 320i xDrive, 2018 BMW 320i, 2017 BMW X4, and 2017 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.
The diagnosis is monitoring the pressure switch of the Natural Vacuum Leak Detection (NVLD).
Fault monitoring conditions:
The fault is detected when there is a short circuit to B+.