P138F BMW – Crankshaft Sensor Synchronization Malfunction

P138F BMW Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P138F BMW Possible Causes

Faulty Crankshaft Sensor,Crankshaft Sensor harness is open or shorted,Crankshaft Sensor circuit poor electrical connection

P138F BMW Description

The Engine Control Module (ECM) monitors the Crankshaft Sensor. The ECM sets the OBDII code when the Crankshaft Sensor is not to factory specifications.