If The Measured Value Is Less Than The Nominal Value - 0.2 Bar:
WARNING: This page is about a different car, the 2003 BMW X5, 2002 BMW X5, 2001 BMW X5, and 2000 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.
- Line cross-sections in fuel feed are constricted or fuel filter is clogged,
or
- Fuel pump voltage supply is not O.K.: e.g. as a result of high contact resistance (corrosion) in plug connection between wiring harness and fuel pump.