P13B8 BMW – Knock Sensor Electrical Signal Input ‘B’ Short Circuit To Ground

P13B8 BMW Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P13B8 BMW Possible Causes

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

P13B8 BMW Description

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