Possible causes – AIR diverter system fault– AIR plumbing fault Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1000 BMW Description Faulty AIR Pump

Possible causes – Faulty Differential Pressure Sensor– 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) P1105 BMW Description Differential pressure sensor intake

Possible causes – Faulty Differential Pressure Sensor– 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

Possible causes – Faulty Engine Coolant Temperature Radiator Outlet Sensor– Engine Coolant Temperature Radiator Outlet Sensor harness is open or shorted– Engine Coolant Temperature Radiator Outlet Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon

Possible causes – Faulty Front Heated Oxygen Sensor Bank 1– Front Heated Oxygen Sensor Bank 1 harness is open or shorted– Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection– Inappropriate fuel pressure– Faulty fuel injectors– Intake air leaks

Possible causes – Faulty Front Heated Oxygen Sensor Bank 1– Front Heated Oxygen Sensor Bank 1 harness is open or shorted– Front Heated Oxygen Sensor Bank 1 circuit poor electrical connection– Inappropriate fuel pressure– Faulty fuel injectors– Intake air leaks

Possible causes – Faulty HO2S Bank 1 Sensor 1– HO2S Bank 1 Sensor 1 harness is open or shorted– HO2S Bank 1 Sensor 1 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty HO2S Bank 1 Sensor 1– HO2S Bank 1 Sensor 1 harness is open or shorted– HO2S Bank 1 Sensor 1 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty HO2S Bank 1 Sensor 2– HO2S Bank 1 Sensor 2 harness is open or shorted– HO2S Bank 1 Sensor 2 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty HO2S Bank 1 Sensor 2– HO2S Bank 1 Sensor 2 harness is open or shorted– HO2S Bank 1 Sensor 2 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty HO2S Bank 1 Sensor 2– HO2S Bank 1 Sensor 2 harness is open or shorted– HO2S Bank 1 Sensor 2 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty HO2S Bank 1 Sensor 2– HO2S Bank 1 Sensor 2 harness is open or shorted– HO2S Bank 1 Sensor 2 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty Idle Air Control (IAC) valve– Idle Air Control (IAC) valve harness is open or shorted– Idle Air Control (IAC) valve circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty Mass Air Flow Sensor– Mass Air Flow Sensor harness is open or shorted– Mass Air Flow Sensor electrical circuit poor connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty Mass Air Flow– Mass Air Flow harness is open or shorted– Mass Air Flow circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty Mass Air Flow Sensor– Mass Air Flow Sensor harness is open or shorted– Mass Air Flow Sensor electrical circuit poor connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty Mass Air Flow Sensor– Mass Air Flow Sensor harness is open or shorted– Mass Air Flow Sensor electrical circuit poor connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty O2 Sensor Bank 1 Sensor 1– O2 Sensor Bank 1 Sensor 1 harness is open or shorted – O2 Sensor Bank 1 Sensor 1 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine

Possible causes – Faulty O2 Sensor Bank 1 Sensor 1– O2 Sensor Bank 1 Sensor 1 harness is open or shorted– O2 Sensor Bank 1 Sensor 1 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon

Possible causes – Faulty O2 Sensor Bank 1 Sensor 1– O2 Sensor Bank 1 Sensor 1 harness is open or shorted– O2 Sensor Bank 1 Sensor 1 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon