# O2 Sensor

**URL:** <https://community.cartalk.com/t/o2-sensor/3398>\
**Category:** Maintenance/Repairs\
**Tags:** sensors\
**Created:** [August 20, 2007, 5:30pm UTC](https://community.cartalk.com/t/o2-sensor/3398 "2007-08-20T17:30:14Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![John\_Finnegan](https://avatars.discourse-cdn.com/v4/letter/j/c6cbf5/32.png) [@John\_Finnegan](https://community.cartalk.com/u/John_Finnegan)\
**Post date:** [August 20, 2007, 5:30pm UTC](https://community.cartalk.com/t/o2-sensor/3398/1 "2007-08-20T17:30:14Z")

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I have a 1994 Mercedes with the engine light on. I was told it needs an O2 sensor. Is there damage being done if I drive the car without replacing the sensor?

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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:** [August 20, 2007, 5:34pm UTC](https://community.cartalk.com/t/o2-sensor/3398/2 "2007-08-20T17:34:48Z")

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[b]Depending in which manner the O2 sensor failed, could result in damaging the catalytic converter if not replaced.

Tester[/b]