P04DB on the 2017 Ford Focus
The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.
Nobody has written a description of this code yet.
| SSM 46705 | 2017-08-25. Service bulletin. Some 2017 Model Year Focus vehicles equipped with 1.0L gasoline turbocharged direct injection(GTDI) engines may exhibit illuminated malfunction indicator light(MIL) with DTC P04DB (crankcase ventilation system disconnected) stored in powertrain control module(PCM) memory. Inspect positive crankcase ventilation (PCV) tube assembly for O-Ring damage or partial disconnect. PCV tube connects to air induction system(AIS) and camshaft cover port. PCV tube assembly also includes crankcase pressure sensor(Reference 303-14 electronic engine controls). Engineering is currently investigating. To assist with the investigation, refer to the Professional Technician Society (PTS) website and use the report a vehicle concern link at the bottom of the OASIS report. |
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| TSB 17-0010 | 2017-03-15. Service bulletin. SOME 2016-2017 FOCUS VEHICLES EQUIPPED WITH A 1.0L GASOLINE TURBO DIRECT INJECTION (GTDI) ENGINE AND BUILT ON OR BEFORE 18-JAN-2017 MAY EXHIBIT AN ILLUMINATED MIL WITH DTC P04DB (CRANKCASE VENTILATION SYSTEM DISCONNECTED) STORED IN POWERTRAIN CONTROL MODULE (PCM) MEMORY. FOLLOW THE SERVICE PROCEDURE STEPS TO CORRECT THE CONDITION. |
2 on file from NHTSA, as of 2026-10-19. See them in the bulletin list. A bulletin lists model years: read the document for which vehicles it concerns.