P15D4 BMW – Coolant Pump Dry Run

P15D4 BMW Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P15D4 BMW Possible Causes

Low Coolant Level,Air in the coolant system,Faulty Water Pump,Water Pump harness is open or shorted,Water Pump circuit poor electrical connection

P15D4 BMW Description

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