Check engine light
Thread Starter
Instructor
Joined: Oct 2006
Posts: 122
Likes: 0
From: LeMars Iowa
Check engine light
On my way home from a local car show this evening, 15 miles away.
Check engine light comes on. Car still runs fine and no codes were thrown.
Car: 1998 A4
Can't be something to serious, could it?
Will have it checked tomorrow or Friday.
Thanks
Greg
Check engine light comes on. Car still runs fine and no codes were thrown.
Car: 1998 A4
Can't be something to serious, could it?
Will have it checked tomorrow or Friday.
Thanks
Greg
Racer
Joined: Dec 2001
Posts: 452
Likes: 2
From: Lynnfield MA
Don't be too concerned if no code was stored.
Once it becomes repeatable, come back and visit us again.
Race Director
Joined: Jul 2004
Posts: 16,795
Likes: 62
From: Lake Havasu City, AZ
the check engine light is normally associated with emissions.
#1 cause 85+ % ... a loose gas cap .
#2 cause ethanol rich fuel that leans out the engine a bit too much
Fill up your car with another brand of gas and make sure the cap is tight... It may take a few on/off cycles for the light to clear itself if that is the sissue
#1 cause 85+ % ... a loose gas cap .
#2 cause ethanol rich fuel that leans out the engine a bit too much
Fill up your car with another brand of gas and make sure the cap is tight... It may take a few on/off cycles for the light to clear itself if that is the sissue
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Safety Car
Joined: Oct 2003
Posts: 3,699
Likes: 16
From: Sun City- Menifee Calif.
Same here, Twice in the last couple years. Cleared H codes & it was gone. I don`t know if it means anything but both times I was making a lot of short runs Starting & shutting engine off a lot of times in a short time. Car ran fine.
Instructor
Joined: Jan 2006
Posts: 214
Likes: 5
From: Middletown Delaware
There are codes that are temporary and keep the light on so you can tell if there is a problem developing.
If it comes on again write it down that will tell us what tripped the light.
Erasing wont give you answers, just turn the light off.
If it comes on again write it down that will tell us what tripped the light.
Erasing wont give you answers, just turn the light off.
