# Problems with o2 sensor

**URL:** <https://community.cartalk.com/t/problems-with-o2-sensor/194419>\
**Category:** Maintenance/Repairs\
**Created:** [February 24, 2024, 7:31pm UTC](https://community.cartalk.com/t/problems-with-o2-sensor/194419 "2024-02-24T19:31:24Z")\
**Posts on this page:** 6\
**Page:** 2

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**Author:** ![MilanS02](https://avatars.discourse-cdn.com/v4/letter/m/c77e96/32.png) [@MilanS02](https://community.cartalk.com/u/MilanS02)\
**Post date:** [February 25, 2024, 10:17pm UTC](https://community.cartalk.com/t/problems-with-o2-sensor/194419/21 "2024-02-25T22:17:29Z")

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Thanks tester

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**Author:** ![oldtimer-11](https://avatars.discourse-cdn.com/v4/letter/o/e79b87/32.png) [@oldtimer-11](https://community.cartalk.com/u/oldtimer-11)\
**Post date:** [February 26, 2024, 10:22am UTC](https://community.cartalk.com/t/problems-with-o2-sensor/194419/22 "2024-02-26T10:22:51Z")

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You think you have not burned any oil because your misfiring spark plugs are sending unburnt gasoline down into the crankcase.

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**Author:** ![MilanS02](https://avatars.discourse-cdn.com/v4/letter/m/c77e96/32.png) [@MilanS02](https://community.cartalk.com/u/MilanS02)\
**Post date:** [February 26, 2024, 11:07am UTC](https://community.cartalk.com/t/problems-with-o2-sensor/194419/23 "2024-02-26T11:07:28Z")

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Well if that was the case oil levels would rise, right? So no. I just wanna solve the fouling spark plugs problem as it seems to be the causing computer faults to come on. The first thing I wanted and the reason why I have opened this topic is to make clear if I could fix the problem just by replacing the sensors which turned on computer faults or the problem is just of some other sort as it seems to be (fouling spark plugs)

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**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\
**Post date:** [February 26, 2024, 3:24pm UTC](https://community.cartalk.com/t/problems-with-o2-sensor/194419/24 "2024-02-26T15:24:50Z")

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Have you taken it out for a 1 hour drive at freeway speed? That should be enough to boil off any accumulated gas and water in the oil. Then check the level.

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**Author:** ![MilanS02](https://avatars.discourse-cdn.com/v4/letter/m/c77e96/32.png) [@MilanS02](https://community.cartalk.com/u/MilanS02)\
**Post date:** [February 26, 2024, 4:20pm UTC](https://community.cartalk.com/t/problems-with-o2-sensor/194419/25 "2024-02-26T16:20:13Z")

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Actually, I did a few months ago, twice, but I didn’t check the oil level right after that, it probably accumulated since then. Will do that, thanks for the tip!

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**Author:** ![oldtimer-11](https://avatars.discourse-cdn.com/v4/letter/o/e79b87/32.png) [@oldtimer-11](https://community.cartalk.com/u/oldtimer-11)\
**Post date:** [February 27, 2024, 6:57am UTC](https://community.cartalk.com/t/problems-with-o2-sensor/194419/26 "2024-02-27T06:57:42Z")

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Not necessarily, the gasoline thins the oil making it burn faster so the volume might stay the same but gasoline is not a good lubricant.

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