Possible causes
– Faulty Differential Pressure Sensor
– Differential Pressure Sensor harness is open or shorted
– Differential Pressure Sensor circuit poor electrical connection
– Differential Pressure Sensor harness is open or shorted
– Differential Pressure Sensor circuit poor electrical connection
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P1104 BMW Description
Differential pressure sensor intake manifold pressure too low bank 1