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Home >> Fiat >> 2016 >> 500 Turbo, Standard Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 63 (1.4L 16-Valve Turbo - DTCS P0271-00 To P060C-00 - 500) >> DTC Troubleshooting >> P04DB-00-Crankcase Ventilation System Disconnected >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2015 Fiat 500. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes
CRANKCASE VENTILATION HOSE DISCONNECTED OR LEAKING
CRANKCASE VENTILATION HOSE
CRANKCASE PRESSURE SENSOR

Always perform the PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE 

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