Monitor DTC Status

NOTE: If any misfire, Purge Solenoid Valve, Mass Air Flow Sensor or O2 Sensor heater codes are present, DO ALL REPAIRS associated with those codes before proceeding with this troubleshooting tree.

Connect scan tool and select "Diagnostic Trouble Codes (DTCs)" mode.
Press F4 (DTAL) to select DTC information from the DTCs menu.
Confirm that "DTC Readiness Flag" indicates "Complete". If not, drive the vehicle within conditions noted in the freeze frame data or enable conditions.
Read "DTC Status" parameter.

Fig 1: Monitor DTC Status
Courtesy of HYUNDAI MOTOR CO.
Is parameter displayed "History (Not Present) fault"?

NOTE:

History (Not Present) fault: DTC occurred but has been cleared.
Present fault: DTC is occurring at present time.

YES:

Fault is intermittent caused by poor contact in the sensor's and/or PCM's connector or was repaired and PCM memory was not cleared. Thoroughly check connectors for loose or poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

NO:

Go to next step below.