Monitor DTC Status

NOTE: If any DTCs relating to HO2S 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 F5(INFO) 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: Screen Display - DTC Status
Courtesy of KIA MOTORS AMERICA, INC.
Is parameter displayed "History (Not Present) fault"?
NOTE:
1. History (Not Present) fault: DTC occurred but has been cleared.
2. 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 looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Go to PUMPING CURRENT CIRCUIT INSPECTION .