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Home >> Hyundai >> 2006 >> Santa Fe GLS, 2.7 D, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Fuel System (G6BA-GSL 2.7) >> Gasoline Engine Control System >> Heated Oxygen Sensor (Ho2S) >> Troubleshooting Hints

Troubleshooting Hints

  1. If the HO2S is defective, abnormally high emissions may occur.
  2. If the HO2S check results are normal, but the sensor output voltage is out of specification, check for the following items (related to air fuel ratio control system):
    1. Defective Injector
    2. Air leaks in the intake manifold
    3. Defective Mass Air Flow (MAF) Sensor
    4. Defective Intake Air Temperature Sensor (ATS)
    5. Defective Engine Coolant Temperature Sensor (ECTS)
    6. Defective Manifold Absolute Pressure (MAP) Sensor
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