A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

Check Engine Light

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Old Nov 27, 1998 | 03:54 PM
  #1  
Terry
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Default Check Engine Light

This is the 2nd time it happened and it appears to not be a major problem at all. But I was wondering if anyone else experenced this and what the cause is.<p>The 2 times I got it was when I started the car the day after I washed it. To wash my car, I usually push the car out of the garage and after the wash, I'll start the car and drive it back in the garage (a trip that takes no more than 10 sec).<p>Could this quick start and stop be the cause?
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Old Nov 27, 1998 | 05:03 PM
  #2  
Josh
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Very well could be the problem -- is it a 1.8T or 2.8?
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Old Nov 27, 1998 | 10:48 PM
  #3  
Terry
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Default It's a 2.8. But why does it do that?

[nt]
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Old Nov 28, 1998 | 06:56 AM
  #4  
JAN
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Default Re: Check Engine Light

When you start the car the air/fuel mixture is very rich. If you do not run the car for atleast 5 minutes after starting the mixture will have stayed in the system and will be too rich for your next start - causing an emissions warning.<p>My suggestion, do what I do: push it out, wash, and leave out or push back in, if you can.<p>JAN<br>98.5 1.8T QMS
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