Exhaust Gas Recirculation Flow Malfunction what to do?

i have just did a diagnostics on my car and i got Exhaust Gas Recirculation Flow and Random/Multiple Cylinder Misfire Detected but i do not know what to replace can someone help me? My car is a 1998 Nissan Maxima.|||See if you can clean it. Remove it and shoot carb cleaner spray where the exhaust goes in then put in back(new gasket). Clear the error code and run the car.|||Replace the EGR Valve and check all plugs and wires for Damage.|||Check the EGR valve in stuck position. also check the igniton system