LEMON Manuals: Even more car manuals for everyone
Home >> Lincoln >> 2018 >> MKZ Select, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 70 (Engine Controls - Powertrain DTC Charts & Descriptions (Except Diesel & Hybrid)) >> Diagnostic Trouble Code (DTC) Charts And Descriptions >> P04DB - Crankcase Ventilation System Disconnected

P04DB - Crankcase Ventilation System Disconnected

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2016 Lincoln Navigator, 2016 Lincoln MKZ, 2016 Lincoln MKX, 2016 Lincoln MKT, and 2016 Lincoln MKS. However, it is still accessible from the selected car via links, so may be relevant.
DTC DESCRIPTION P04DB - CRANKCASE VENTILATION SYSTEM DISCONNECTED

Description:  This DTC sets when the crankcase pressure sensor is disconnected.
Possible Causes: 
  • Disconnected hose from crankcase to one side of the crankcase pressure sensor
  • Disconnected hose from intake manifold to one side of the crankcase pressure sensor
  • Damaged or pinched PCV hose o-ring seal
  • Damaged dipstick o-ring seal
  • Incorrectly installed dipstick
  • Incorrectly installed oil cap
  • Disconnected or damaged vacuum lines between the engine and any vacuum operated components
Diagnostic Aids:  Verify the integrity of the PCV system.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All GO to Pinpoint Test HG .