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.
Diagnosis monitors the DME after-run to determine whether the ambient pressure sensor, intake pipe vacuum sensor and pressure sensor upstream of the throttle valve all measure the same pressure.
Fault monitoring conditions:
The fault is detected if the charging pressure sensor reading deviates from the mean value of the other pressure sensors (ambient pressure, charging pressure, intake pipe vacuum) by less than 70 mbar.