Morphh

Hi guys, yes code p0401 came up, notice secondary air pump running with car off, then it stopped then the code came up, under investigating I notice the 40Amp fuse is poped, but before I replace 40amp fuse should I also replace the relay switch. I have read that it is usually the relay not working properly, that is why pump will not shut off. Thanks guys
Everyone has helped me out so much and just want to say thanks in advance