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.
During the DME after-run The diagnosis determines whether the ambient pressure, intake-manifold pressure and charging pressure sensors are all registering a single pressure reading.
Fault monitoring conditions:
The fault is detected when the value measured by the ambient pressure sensor is too low relative to the comparative pressure values.