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Home >> Hyundai >> 2005 >> Elantra GLS, 4D Hatchback, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel System >> DTC Troubleshooting Procedures >> DTC P0172: System Too Rich (Bank 1) >> Engine Oil Contamination Inspection

Engine Oil Contamination Inspection

  1. Check the engine oil level. The oil level should be between the min. and max. marking. Fill to the correct oil level.
  2. Warm up the engine to normal operating temperature.
  3. Install Scantool and note the "S/TERM FUEL TRIM(B1)" parameter on the Scantool data list.
  4. Disconnect and plug the positive crankcase ventilation
  5. Monitor the "S/TERM FUEL TRIM(B1)" parameter on the Scantool data list once again.

    Specification : The value should remain more or less unchanged

  6. Is the displayed value within the specified value?

    YES 

    NO 

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