# 2006 Jeep Wrangler - new O2 sensors, CEL is back

**URL:** <https://community.cartalk.com/t/2006-jeep-wrangler-new-o2-sensors-cel-is-back/116606>\
**Category:** Maintenance/Repairs\
**Tags:** wrangler, jeep\
**Created:** [May 1, 2018, 9:38pm UTC](https://community.cartalk.com/t/2006-jeep-wrangler-new-o2-sensors-cel-is-back/116606 "2018-05-01T21:38:06Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![JuneFoley](https://avatars.discourse-cdn.com/v4/letter/j/898d66/32.png) [@JuneFoley](https://community.cartalk.com/u/JuneFoley)\
**Post date:** [May 1, 2018, 9:38pm UTC](https://community.cartalk.com/t/2006-jeep-wrangler-new-o2-sensors-cel-is-back/116606/1 "2018-05-01T21:38:06Z")

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engine light came back on after replacing both oxygen sensors (both are lower sensors Moogs) What else can it be?

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**Author:** ![pyrolord314](https://avatars.discourse-cdn.com/v4/letter/p/6a8cbe/32.png) [@pyrolord314](https://community.cartalk.com/u/pyrolord314)\
**Post date:** [May 1, 2018, 11:27pm UTC](https://community.cartalk.com/t/2006-jeep-wrangler-new-o2-sensors-cel-is-back/116606/2 "2018-05-01T23:27:39Z")

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Did you check the codes before and after replacing the O2 sensor

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**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\
**Post date:** [May 2, 2018, 1:17am UTC](https://community.cartalk.com/t/2006-jeep-wrangler-new-o2-sensors-cel-is-back/116606/3 "2018-05-02T01:17:36Z")

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And what codes is it throwing now??