Red X light on EGR?

Tiny
DAVID CHEN
  • MEMBER
  • 2003 CHEVROLET IMPALA
  • 3.4L
  • V6
  • 2WD
  • AUTOMATIC
  • 10,000 MILES
The OBD II I/M shown green Check light is on but with red X light on EGR. During the last 2 years, this car was just for local driving only, does it cause this problem? Also, it is due for a Smog Check now. Please let me know what their correction is to do with. Thank you very much with the best regards.
Wednesday, June 11th, 2025 AT 3:23 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
Hi,

What we need to do first is scan the computer. It should provide the direction we need to go. Keep in mind, there are a few different things that can adversely affect the EGR. A code should point us in the right direction.

Here is a link that shows how to scan the computer:

https://www.2carpros.com/articles

I realize not everyone has a scan tool. However, most parts stores will do it for you at no charge. Have this done and let us know the codes that are retrieved.

Take care,

Joe
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Wednesday, June 11th, 2025 AT 8:41 PM
Tiny
DAVID CHEN
  • MEMBER
  • 16 POSTS
It is no computer code presents, I figure out that the EGR not open due to no highway driving for so long times causing this problem, I driven this cars for about 30 miles than OBD II shown green check mark on EGR. This car passed Smog Check 2 day ago. Thanks.
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Saturday, June 14th, 2025 AT 12:37 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
Hi,

Thank you for that update. I'm glad to hear that things are working properly and that it passed.

Regardless, take care and feel free to come back anytime in the future.

Joe
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Sunday, June 15th, 2025 AT 9:07 PM

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