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Home >> Chrysler >> 2011 >> 300 Base, Gas >> Repair and Diagnosis >> External Pages >> Different car >> Section 98 (6.7L Diesel - DTCS - P040D To P1191 - 3500 Cab & Chassis) >> Diagnosis and Testing >> P04DB-Crankcase Ventilation System Disconnected >> Code Description >> Possible Causes

Possible Causes

WARNING: This page is about a different car, the 2011 RAM Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
Possible Causes 
DISCONNECTED CRANKCASE VENTILATION HOSE
INTAKE SYSTEM LEAK
CRANKCASE BREATHER FILTER CLOGGED

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to  PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE - 6.7L  . 

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