Monitoring criteria
WARNING: This page does not describe the selected car, but rather 53 other vehicles, including the 2013 BMW X6 M, 2013 BMW X5 M, 2013 BMW M6, 2013 BMW M5, and 2013 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.
The fault is recognized when the knock signal is implausible for the current operating point. (Static evaluation, so no threshold value) Potential problem source(s):
-Loose screw on knock sensor