IG "OFF" and disconnect HO2S(S1) connector.
Check that HO2S(S1) is contaminated or damaged by foreign materials.
![]() | ▶ Repair or replace as necessary and then, go to "Verification of Vehicle Repair" procedue. |
![]() | ▶ Carefully re-do this troubleshooting guide steps. ▶ If problem still occurs, replace O2 Sensor 1 and then go to "Verification of Vehicle Repair" procedure. |