# 2004 Mazda Mazda3 check engine light

**URL:** <https://community.cartalk.com/t/2004-mazda-mazda3-check-engine-light/145996>\
**Category:** Maintenance/Repairs\
**Tags:** mazda3, mazda\
**Created:** [August 4, 2019, 9:14pm UTC](https://community.cartalk.com/t/2004-mazda-mazda3-check-engine-light/145996 "2019-08-04T21:14:06Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Peter04](https://avatars.discourse-cdn.com/v4/letter/p/848f3c/32.png) [@Peter04](https://community.cartalk.com/u/Peter04)\
**Post date:** [August 4, 2019, 9:14pm UTC](https://community.cartalk.com/t/2004-mazda-mazda3-check-engine-light/145996/1 "2019-08-04T21:14:06Z")

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The check engine has lit up…i checked the fuel tank thing…its tight so nothing there…what else could it be ? it was fully serviced 1 month ago

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**Author:** ![VOLVO-V70](https://avatars.discourse-cdn.com/v4/letter/v/8e8cbc/32.png) [@VOLVO-V70](https://community.cartalk.com/u/VOLVO-V70)\
**Post date:** [August 4, 2019, 9:16pm UTC](https://community.cartalk.com/t/2004-mazda-mazda3-check-engine-light/145996/2 "2019-08-04T21:16:51Z")

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> [@Peter04](#):
>
> i checked the fuel tank thing

I guess you mean the gas cap. If you are in the US most Auto Zone stores will read your codes . Post back with the actual code , not what the clerk says it means and you will get better answers.