# How do I find bank one location of sensor?

**URL:** <https://community.cartalk.com/t/how-do-i-find-bank-one-location-of-sensor/171075>\
**Category:** Maintenance/Repairs\
**Tags:** ford, taurus\
**Created:** [October 11, 2020, 1:19am UTC](https://community.cartalk.com/t/how-do-i-find-bank-one-location-of-sensor/171075 "2020-10-11T01:19:32Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Mikel-25](https://avatars.discourse-cdn.com/v4/letter/m/a6a055/32.png) [@Mikel-25](https://community.cartalk.com/u/Mikel-25)\
**Post date:** [October 11, 2020, 1:19am UTC](https://community.cartalk.com/t/how-do-i-find-bank-one-location-of-sensor/171075/1 "2020-10-11T01:19:32Z")

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Hello, I have a 2013 Ford Taurus V6 and I have a oxygen sensor issue, it’s the bank 1 and sensor 2 area. I just wanted to know if bank 1 is left or right and if sensor 2 is upstream or downstream.

Thank you

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**Author:** ![tcmichnorth](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tcmichnorth/32/25126_2.png) [@tcmichnorth](https://community.cartalk.com/u/tcmichnorth)\
**Post date:** [October 11, 2020, 1:34am UTC](https://community.cartalk.com/t/how-do-i-find-bank-one-location-of-sensor/171075/2 "2020-10-11T01:34:14Z")

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Bank one is on the side of #1 cylinder.  
Sensor 2 is downstream.

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<div class="post-metadata">

**Author:** ![Mikel-25](https://avatars.discourse-cdn.com/v4/letter/m/a6a055/32.png) [@Mikel-25](https://community.cartalk.com/u/Mikel-25)\
**Post date:** [October 11, 2020, 1:44am UTC](https://community.cartalk.com/t/how-do-i-find-bank-one-location-of-sensor/171075/3 "2020-10-11T01:44:58Z")

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Ok, so on my cars cylinder 1 would be on the front right under passenger seat

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**Author:** ![tcmichnorth](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/tcmichnorth/32/25126_2.png) [@tcmichnorth](https://community.cartalk.com/u/tcmichnorth)\
**Post date:** [October 11, 2020, 2:02am UTC](https://community.cartalk.com/t/how-do-i-find-bank-one-location-of-sensor/171075/4 "2020-10-11T02:02:45Z")

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Cylinder 1 is passenger side towards firewall.

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<div class="post-metadata">

**Author:** ![Mikel-25](https://avatars.discourse-cdn.com/v4/letter/m/a6a055/32.png) [@Mikel-25](https://community.cartalk.com/u/Mikel-25)\
**Post date:** [October 11, 2020, 2:08am UTC](https://community.cartalk.com/t/how-do-i-find-bank-one-location-of-sensor/171075/5 "2020-10-11T02:08:19Z")

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Thank you for all your help. I greatly appreciate it.

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**Author:** ![JoeMario](https://avatars.discourse-cdn.com/v4/letter/j/3bc359/32.png) [@JoeMario](https://community.cartalk.com/u/JoeMario)\
**Post date:** [October 11, 2020, 11:35am UTC](https://community.cartalk.com/t/how-do-i-find-bank-one-location-of-sensor/171075/6 "2020-10-11T11:35:22Z")

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If you look at a “V” engine (v6, v8, etc), there will always be one cylinder that is slightly forward of the other, toward the front of the engine. The amount it will be forward will be the width of a connecting rod. On the order of an inch.

Cylinder number one is the forward most cylinder in that bank.