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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 57 (Engine Control System Diagnosis (2 Of 2) (HEV)) >> DTC P2191: System Too Lean At Higher Load (Multiple) (Bank 1) >> W/Harness Inspection >> Positive Crankcase Ventilation System Inspection

Positive Crankcase Ventilation System Inspection

WARNING: This page is about a different variant/trim than selected.
  1. Check the engine oil level. The oil level should be between the min. and max. marking. Fill to the correct oil level.
  2. Check crankcase ventilation valve for improper installation, damaged o-rings and malfunctioning.
  3. Warm up the engine to normal operating temperature.
  4. Connect GDS and note the "SHORT TERM FUEL-B1" parameter on the GDS data list.
  5. Disconnect and plug the positive crankcase ventilation at the intake manifold side.
  6. Monitor the "SHORT TERM FUEL-B1" parameter on the GDS data list once again.

    Specification:  The value should remain more or less unchanged

  7. Is the displayed value within the specified value?

    YES 

    • Go to next step as below.

    NO 

    • Check the PCV (Positive Crankcase Ventilation) valve for operation properly. Refer to INSPECTION . If OK, check that engine oil is diluted with fuel. Change the oil or filter as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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