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Home >> Infiniti >> 2017 >> QX30 Sport >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (DTCS) (3 Of 5) >> DTC/Circuit Diagnosis >> DTC P04DB: Crankcase Ventilation System >> DTC Description >> DTC Detection Logic
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DTC Detection Logic

DTC No. CONSULT screen terms DTC detecting condition
(Trouble diagnosis content) Malfunction type
P04DB 79 Crankcase ventilation system
(Crankcase Ventilation System Disconnected)		 MECHANCL LINKAGE MALFNCTN The crankcase ventilation system is interrupted. The mechanical connection has malfunctioned.
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