Visual Inspection
- Refer to Heated Oxygen Sensor (HO2S)
and visually and/or physically inspect following conditions.
- Proper installation of O2 Sensors.
- Check for corrosion on terminals.
- Check for damaged wiring.
- Fuel, Engine coolant or oil contamination.
- Check for good ground for O2 sensor.
- Has any problems been found?
YES
- Repair as necessary and then go to "Verification Of Vehicle Repair " procedure.
NO
- Go to Wiring Inspection procedure below.