# Can I drive with a bad O2 sensor? (2 part question)

**URL:** <https://community.cartalk.com/t/can-i-drive-with-a-bad-o2-sensor-2-part-question/171136>\
**Category:** Maintenance/Repairs\
**Tags:** sensors, toyota, highlander\
**Created:** [October 12, 2020, 2:40pm UTC](https://community.cartalk.com/t/can-i-drive-with-a-bad-o2-sensor-2-part-question/171136 "2020-10-12T14:40:29Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![Tester](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tester/32/15976_2.png) [@Tester](https://community.cartalk.com/u/Tester)\
**Post date:** [October 12, 2020, 3:13pm UTC](https://community.cartalk.com/t/can-i-drive-with-a-bad-o2-sensor-2-part-question/171136/3 "2020-10-12T15:13:12Z")

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Bank 1, sensor 2, is the O2 sensor after the catalytic converter.

The only purpose for this sensor is to monitor the catalytic converter efficiency. It has nothing to do with air/fuel control for the engine.

So, it’s not urgent that this sensor be replaced.

You only replace the O2 sensor the code indicates has a problem.

Tester

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