Monitor Scantool Data

Connect scantool to DLC (Data Link Cable).
Warm up the engine to normal operating temperature.
Monitor "HO2S (B1S1)" parameter on scantool.

Fig 1: Scan Tool Display - Oxygen Sensor
Courtesy of HYUNDAI MOTOR CO.
Is the "HO2S (B1S1)" parameter operating correctly?
YES
- Fault is intermittent caused by poor contact in the sensor's and/or ECM's connector or was repaired and ECM/PCM memory was not cleared. Thoroughly check connectors for looseness, poor connection, ending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Go to "TERMINAL AND CONNECTOR INSPECTION " procedure.
  NOTE: This DTC might be caused by the malfunction of Heater circuit, so, check the heater circuit first.