# Volvo S40 2004 Check Engine light

**URL:** <https://community.cartalk.com/t/volvo-s40-2004-check-engine-light/69652>\
**Category:** Maintenance/Repairs\
**Tags:** volvo, s40\
**Created:** [November 23, 2011, 10:58pm UTC](https://community.cartalk.com/t/volvo-s40-2004-check-engine-light/69652 "2011-11-23T22:58:58Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![christo](https://avatars.discourse-cdn.com/v4/letter/c/ebca7d/32.png) [@christo](https://community.cartalk.com/u/christo)\
**Post date:** [November 23, 2011, 10:58pm UTC](https://community.cartalk.com/t/volvo-s40-2004-check-engine-light/69652/1 "2011-11-23T22:58:58Z")

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My mothers 2004 Volvo S40 (original body style) has an illuminated check engine light.

Dad took it to their local San Diego Volvo dealer. Unable to get a code from the cars computer and guessing the problem might be with the fuel filler cap seal, the dealer sold them a new fuel filler cap, offering them a refund on the cap should that solution not work. It did not.

Is there another solution I can offer Dad to suggest to the dealer when returning there for the filler cap refund?

Regards,

- Chris

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**Author:** ![common-sense-answer](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/common-sense-answer/32/716_2.png) [@common-sense-answer](https://community.cartalk.com/u/common-sense-answer)\
**Post date:** [November 24, 2011, 2:41am UTC](https://community.cartalk.com/t/volvo-s40-2004-check-engine-light/69652/2 "2011-11-24T02:41:14Z")

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**_That Was Nice Of The Dealer To Let Dad “Try” The Gas Cap.  
I Hope That’s An Indication Of A Great Dealer And Not A Sign That Dad Has Been A Heavy Contributor To The Service Department’s Bottom Line And Is Therefore A Preferred Customer._**

CEL lit and No codes ?  
Did the dealer try and turn off the CEL ?  
And . . . it wouldn’t turn off ?

It takes usually takes several engine starts to clear some codes and turn the light off after a problem is fixed.

Now, when Dad returns the cap and tells the service guys that it didn’t work, what will they say when Dad asks them if they know of a place to get a Volvo repaired ?

CSA

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**Author:** ![Joseph\_E\_Meehan](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/joseph_e_meehan/32/21_2.png) [@Joseph\_E\_Meehan](https://community.cartalk.com/u/Joseph_E_Meehan)\
**Post date:** [November 24, 2011, 4:16pm UTC](https://community.cartalk.com/t/volvo-s40-2004-check-engine-light/69652/3 "2011-11-24T16:16:19Z")

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"when Dad returns the cap and tells the service guys that it didn’t work, what will they say when Dad asks them if they know of a place to get a Volvo repaired ?

I like that answer.