P15DF BMW – Cold Start Fuel Pressure Too Low Bank 1

P15DF BMW Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P15DF BMW Possible Causes

Fuel tank empty,Faulty Rail-Pressure Sensor,Rail-Pressure Sensor harness is open or shorted,Rail-Pressure Sensor circuit poor electrical connection

P15DF BMW Description

The diagnostic function monitors the high-pressure fuel system to determine whether the pressure levels remain as specified during the catalyst preheating phase. The Engine Control Module (ECM) monitors the Rail-Pressure Sensor. The ECM sets the OBDII code when the Rail-Pressure Sensor is not to factory specifications.