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Component Inspection

Visual Check - HO2S (S1)
1. IG "OFF" and disconnect HO2S (S1) connector.
2. Check that HO2S (S1) is contaminated or damaged by foreign materials.
  YES
  - Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  - Carefully re-do this troubleshooting guide steps.
  - If problem still occurs, replace O2 Sensor 1 and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.