SESlight
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
Burning Brakes
Joined: May 2009
Posts: 1,027
Likes: 1
From: Woodland CA
I just finished fixing mine yesterday - same code P0400 EGR issue
You have to take the EGR valve off and clean the small orifice. Here is a pic:
More info here:
http://tech.corvettecentral.com/2012...egr-diagnosis/
Mine did not look as bad as that pic, but the small orifice was plugged. I used a brass wire brush and some brake cleaner. Put the EGR value back on. I reset the code, and drove it for 15 minutes. No more SES light.
You have to take the EGR valve off and clean the small orifice. Here is a pic:
More info here:
http://tech.corvettecentral.com/2012...egr-diagnosis/
Mine did not look as bad as that pic, but the small orifice was plugged. I used a brass wire brush and some brake cleaner. Put the EGR value back on. I reset the code, and drove it for 15 minutes. No more SES light.
Thread Starter
Cruising
Joined: Aug 2013
Posts: 11
Likes: 0
Ok took it off and it was very clean. If I had a vacuum leak would that cause it. I found a vacuum line to the cruise control off. Fixed it and now the cruise works again. So any ideas on why the SES lihht comes on.
