R8 Quattro Coupe V10-5.2L (BUJ) (2010)
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Switch the ignition on.
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Using a Multimeter, check the Fuel Pressure Sensor (G247) for voltage.
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Switch the ignition off.
If the specified values are obtained:
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Replace the Fuel Pressure Sensor (G247).
If the specified values are not obtained:
Checking wiring