Tag: BMW

Possible causes – Faulty O2 Sensor Bank 2 Sensor 1– O2 Sensor Bank 2 Sensor 1 harness is open or shorted– O2 Sensor Bank 2 Sensor 1 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty O2 Sensor Bank 2 Sensor 2– O2 Sensor Bank 2 Sensor 2 harness is open or shorted– O2 Sensor Bank 2 Sensor 2 circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light)

Possible causes – Faulty Oxygen Sensor– Oxygen Sensor harness is open or shorted– Oxygen Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1130 BMW OBD Code Description O2 sensor circuit dynamic test bank 1 sensor 2

Possible causes – Faulty Oxygen Sensor– Oxygen Sensor harness is open or shorted– Oxygen Sensor circuit poor electrical connection Symptoms – Engine Light ON (or Service Engine Soon Warning Light) P1131 BMW OBD Code Description O2 sensor circuit dynamic test bank 2 sensor 2

Possible causes – Faulty Low Speed Radiator Fan Relay– Low Speed Radiator Fan Relay harness is open or shorted– Low Speed Radiator Fan Relay circuit poor electrical connection– Faulty Electric Fan– Faulty Engine Control Module (ECM) Symptoms – Engine Light ON (or Service Engine Soon Warning Light)– Radiator fan inoperative– Possible engine overheating P0691 BMW…

Possible causes – Faulty mass air flow sensor– Intake air leaks– Dirty mass air flow sensor– Dirty mass air filter– Mass air flow sensor harness is open or shorted– Mass air flow sensor circuit poor electrical connection Tech description Before replacing the mass air flow sensor, try replacing the air filter and cleaning the air…

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 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)