P04DB on the 2019 Mack Pinnacle
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.
| K05954144 | 2019-12-09. Service bulletin. Mack Chassis - Equipped With An MP8 Engine - Diagnostic Trouble Code ( DTC ) P04DB - Crankcase Ventilation Disconnected; US17+OBD16 And US17+OBD18 Emissions (Common Rail Fuel System), Model Years 2018 And 2019 |
|---|---|
| K05954144 | 2018-08-20. Service bulletin. Equipped With An MP8 Engine - Diagnostic Trouble Code ( DTC ) P04DB - Crankcase Ventilation Disconnected; US17+OBD16 And US17+OBD18 Emissions (Common Rail Fuel System), Model Years 2018 And 2019 |
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.