Toyota Oxygen Sensor Change Interval

Suggested Repair

Do not replace oxygen sensors as routine maintenance or with the timing belt. Replace them only when the computer indicates a failure, typically with a check engine light.

Conversation Summary

The owner asked how often Toyota oxygen sensors should be replaced and whether they should be changed with the timing belt around 100,000 km. The expert said the computer signals failure with a check engine light and that oxygen sensors are not replaced as regular maintenance.