# Check engine light flashed, then shut off

**URL:** <https://community.cartalk.com/t/check-engine-light-flashed-then-shut-off/165769>\
**Category:** Maintenance/Repairs\
**Tags:** mercury, grandmarquis\
**Created:** [June 14, 2020, 6:50pm UTC](https://community.cartalk.com/t/check-engine-light-flashed-then-shut-off/165769 "2020-06-14T18:50:06Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![Carlton-22](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/carlton-22/32/21283_2.png) [@Carlton-22](https://community.cartalk.com/u/Carlton-22)\
**Post date:** [June 14, 2020, 6:50pm UTC](https://community.cartalk.com/t/check-engine-light-flashed-then-shut-off/165769/1 "2020-06-14T18:50:06Z")

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2002 Grand Marquis, 150k+

The CEL started flashing on me with some sputtering. I pulled over to check the code and it stopped. Stopped sputtering as well. Drove a few miles and the exact same thing happened and it again stopped when I pulled over. It didn’t happen again for two weeks until today and I still can’t get a code.

New coils a few months ago, plugs about a year old. Runs fine otherwise.

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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:** [June 14, 2020, 7:01pm UTC](https://community.cartalk.com/t/check-engine-light-flashed-then-shut-off/165769/2 "2020-06-14T19:01:06Z")

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A flashing Check Engine light indicates a major misfire is occurring.

I wouldn’t be driving this vehicle until it’s found out what’s causing the flashing Check engine light, as it can result in damaged catalytic converters and engine.

Tester

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**Author:** ![Carlton-22](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/carlton-22/32/21283_2.png) [@Carlton-22](https://community.cartalk.com/u/Carlton-22)\
**Post date:** [June 14, 2020, 7:03pm UTC](https://community.cartalk.com/t/check-engine-light-flashed-then-shut-off/165769/3 "2020-06-14T19:03:41Z")

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Thanks for the reply. I understand the seriousness. The problem is I won’t get the code or symptoms if it isn’t run. Not sure how to approach.

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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:** [June 14, 2020, 7:07pm UTC](https://community.cartalk.com/t/check-engine-light-flashed-then-shut-off/165769/4 "2020-06-14T19:07:15Z")

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There’s a code stored in the computer as a history code.

Any shop with the proper equipment can retrieve the history codes.

Tester

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**Author:** ![Carlton-22](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/carlton-22/32/21283_2.png) [@Carlton-22](https://community.cartalk.com/u/Carlton-22)\
**Post date:** [June 14, 2020, 7:10pm UTC](https://community.cartalk.com/t/check-engine-light-flashed-then-shut-off/165769/5 "2020-06-14T19:10:42Z")

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That I didn’t know. I will drop it off with my mechanic. Thank you.

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**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\
**Post date:** [June 14, 2020, 7:19pm UTC](https://community.cartalk.com/t/check-engine-light-flashed-then-shut-off/165769/6 "2020-06-14T19:19:49Z")

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I had a similar problem, the computer failed and the failure also resulted in a no-code condition.

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**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\
**Post date:** [June 14, 2020, 7:19pm UTC](https://community.cartalk.com/t/check-engine-light-flashed-then-shut-off/165769/7 "2020-06-14T19:19:54Z")

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A misfire fault (minor or major) will be a “pending” fault on the current ignition cycle, the misfire needs to occur on two consecutive ignition cycles to become a stored fault. The pending fault information will be erased if the fault is not detected again. Take your code reader with you and connect it while the problem occurs.
