# 1999 Mercedes-Benz M-Class check engine light

**URL:** <https://community.cartalk.com/t/1999-mercedes-benz-m-class-check-engine-light/116189>\
**Category:** Maintenance/Repairs\
**Tags:** m-class, mercedes-benz, check-engine-light\
**Created:** [April 24, 2018, 12:31am UTC](https://community.cartalk.com/t/1999-mercedes-benz-m-class-check-engine-light/116189 "2018-04-24T00:31:24Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Correa](https://avatars.discourse-cdn.com/v4/letter/c/82dd89/32.png) [@Correa](https://community.cartalk.com/u/Correa)\
**Post date:** [April 24, 2018, 12:31am UTC](https://community.cartalk.com/t/1999-mercedes-benz-m-class-check-engine-light/116189/1 "2018-04-24T00:31:25Z")

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Check engine light on

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**Author:** ![cdaquila](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/cdaquila/32/18089_2.png) [@cdaquila](https://community.cartalk.com/u/cdaquila)\
**Post date:** [April 24, 2018, 12:57am UTC](https://community.cartalk.com/t/1999-mercedes-benz-m-class-check-engine-light/116189/2 "2018-04-24T00:57:58Z")

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Hi @Correa could you please tell us a bit more  
about your vehicle? Is the light blinking? If you’re asking for help with something specific, the extra info will help.

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**Author:** ![db4690](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/db4690/32/2583_2.png) [@db4690](https://community.cartalk.com/u/db4690)\
**Post date:** [April 24, 2018, 1:06am UTC](https://community.cartalk.com/t/1999-mercedes-benz-m-class-check-engine-light/116189/3 "2018-04-24T01:06:10Z")

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you could get your code(s) scanned for free at autozone, for example, and post the code

For example P0171 or P0301

Is the truck running well?

Check engine light on solid or flashing?