HO2S Visual Inspection
- IG "OFF" & Disconnect HO2S (S1) connector.
- Check that HO2S (S1) is contaminated or damaged by foreign materials.
- Has a problem been found?
YES
- Substitute with a known-good HO2S and check for proper operation. If the problem is corrected, replace HO2S and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
NO
- Go to next step.