# 2014 Ford F-150 CEL after air filter discovered backwards

**URL:** <https://community.cartalk.com/t/2014-ford-f-150-cel-after-air-filter-discovered-backwards/175915>\
**Category:** Maintenance/Repairs\
**Tags:** ford, f150\
**Created:** [April 1, 2021, 5:01am UTC](https://community.cartalk.com/t/2014-ford-f-150-cel-after-air-filter-discovered-backwards/175915 "2021-04-01T05:01:30Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Honky2369](https://avatars.discourse-cdn.com/v4/letter/h/76d3ee/32.png) [@Honky2369](https://community.cartalk.com/u/Honky2369)\
**Post date:** [April 1, 2021, 5:01am UTC](https://community.cartalk.com/t/2014-ford-f-150-cel-after-air-filter-discovered-backwards/175915/1 "2021-04-01T05:01:31Z")

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I have the 2014 F150 STX 5.0 liter. I was driving home after an oil change and my truck lost power and I had it towed home. Found the air filter was install the wrong way. This caused the air filter box cover to not seal. I put the air filter and cover on the correct way and the truck runs good with no driving issues. But know I have an engine light on and am getting a P0430 code. I changed my spark plugs, both downstream O2 sensors, and fuel pump. Anyone who can share info on this? I would really appreciate it. Thank you.

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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:** [April 1, 2021, 4:19pm UTC](https://community.cartalk.com/t/2014-ford-f-150-cel-after-air-filter-discovered-backwards/175915/2 "2021-04-01T16:19:35Z")

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Have someone connect a scanner to monitor the signal from the O2 sensor.

 ![image](https://global.discourse-cdn.com/cartalk/original/3X/4/2/427a1c6c16ffa20a687d7be4513eec405c616bfd.jpeg)

If the converter is bad, it’s warranted for 8 years/80,000 miles by the manufacturer.

Tester