Egr Code p0404-no power and smokes?

code p0404  just one code p0404 Exhaust Gas Recirculation Circuit RangePerformance took of the egr with the cooler detached the egr cleaned it ( wasn't If your car's ECU throws a P0404 trouble code, you want to fix the issue quickly Here are common symptoms, causes, and how to fix code P0404

Code P0404 refers to Exhaust gas recirculation system --range performance problem--- causes---hose leakage--wiring---EGR valvesolenoid Autohex online Help for members only, Vehicle:TUCSONix35 Model Year:2011 fault code:p0404

If it is only showing p0404 then that is the signal not being reliable from the egr to the pcm I would firstly fit a blanking plate to the egr The fault code says P0404, EGR Control, Circuit Range Performance I checked the connections to the valve and cleared the fault, it has not