An open or shorted condition detected in the EGR solenoid circuit. or A mechanical problem found in EGR system (vaccum line leak, defective EGR valve, plugged EGR tube, etc.)
I just installed a new EGR kit, 5.2M. Along with a lot of new vac lines everything is sealed tighter than a

The only thing is, I broke the check valve going to the throttle body and used the one from the heater as a replacement. I am going to be buying a couple on tuesday. I just ran a straight, new line in place of the missing check valve. Could that be causing the issue?

Also, are the check valves a big problem if bought used or should I get new, they are a PITA to find, especially on a holiday weekend.

 

My best guess is an electrical problem. Check the wiring for continuity to the PCM.

 

Why would I not have gotten this code before I put a new EGR?
Would a broken temp sensor be a contributing factor?