Diesel Bombers - CEL-code P0404

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- Chevy/GMC Duramax 01-04 LB7 (https://www.dieselbombers.com/chevy-gmc-duramax-01-04-lb7/)

- - CEL-code P0404 (https://www.dieselbombers.com/chevy-gmc-duramax-01-04-lb7/113174-cel-code-p0404.html)

wkoehn

06-20-2013 08:21 PM

CEL-code P0404

My CEL keeps coming on and giving the code P0404 which says something like Exhaust Gas Recirculation open performance. I changed EGR valve and it still came on I had it cleared today and it came on again within 10 miles can anyone help please?

crowellalex

10-23-2013 09:20 PM

Is your vacuum pump working good? Where did you get the EGR valve from?

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