Positive Crankcase Ventilation System Inspection

WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.

Check the engine oil level. The oil level should be between the min. and max. marking. Fill to the correct oil level
Check crankcase ventilation valve for improper installation, damaged o-rings and malfunctioning.
Warm up the engine to normal operating temperature
Connect Scantool and note the "SHORT TERM FUEL-B1" parameter on the Scantool data list.
Disconnect and plug the positive crankcase ventilation at the intake manifold side
Monitor the "SHORT TERM FUEL-B1" parameter on the Scantool data list once again.
Specification: The value should remain more or less unchanged
Is the displayed value within the specified value?
YES
- Go to next step below.
NO
- Check the PCV (Positive Crankcase Ventilation) valve for operation properly. Refer to POSITIVE CRANKCASE VENTILATION (PCV) VALVE . 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