Diagnostic Overview
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2010 BMW M6, 2010 BMW M5, 2009 BMW M6, 2009 BMW M5, and 2008 BMW M6. However, it is still accessible from the selected car via links, so may be relevant.
The Fuel System and the Fuel Rail Pressure Sensor are checked for functionality. The diagnosis runs every driving cycle. In order to ensure the functionality of the fuel system with a rate-controlled variable system pressure, the pressure is checked continuously with the Fuel Rail Pressure Sensor (FRPS).
The plausibility of the sensor is check immediately after engine start in comparison to the mechanical fuel pressure regulator.