A8 Quattro Sedan V8-4.2L (BVJ) (2008)
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Switch the ignition off.
If the specified values are obtained:
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Replace the Low Fuel Pressure Sensor (G410).
If the specified values are not obtained:
Checking wiring
If the manufacturers test box is being used. Perform the following step.
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Install the test box.
If the manufacturers test box is not being used. Perform the following step.
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Remove the Engine Control Module (ECM) (J623). Refer to => [ Engine Control Module, Removing and Installing ] See: Computers and Control
Systems/Engine Control Module/Service and Repair.
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Using a Multimeter, check the Low Fuel Pressure Sensor (G410) electrical harness connector terminals to the Engine Control Module (ECM)
(J623) electrical harness connector T94 terminals for an open circuit.