P0691 BMW – Electric Fan Activation

P0691 BMW Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light),Radiator fan inoperative,Possible engine overheating

P0691 BMW Possible Causes

Faulty Fan 1 Relay,Fan 1 Relay harness is open or shorted,Fan 1 Relay circuit poor electrical connection,Faulty Fan 1,Fan 1 harness is open or shorted,Fan 1 circuit poor electrical connection,Faulty Engine Control Module (ECM)

P0691 BMW Description

The Engine Control Module (ECM) monitors the Cooling Fan 1 Control Circuit. The ECM sets the OBDII code when the Cooling Fan 1 Control Circuit is not to the factory specifications.