Audi A3 Dpf Pressure Sensor (Andre Herrera)
You may find that the fault is intermittent. THis sensor is measuring the aircon gass pressure. Check the Fuel Quantity supplied by the Fuel Pump.
Changed one pin oil pressure sensor at filter, no change.
Check Measuring Values for Fuel Pressure.
The sound starts when I move the key to the ON position, without starting the engine. I know there is a valve which Audi's have had an issue with which do exactly this. Failing of this sensor wont result in a error in VCDS.
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