Thanks for the reply. I will clear the codes, and go from there. Thanks again

I have a 2004 V70 non turbo. The other day while driving, it started running rough, and lost acceleration. I got it to the parts store, and they read the codes for me. The codes are as follows; 1) P2227 Barometric Pressure Sensor A Circuit Range/Performance 2) P0305 Cylinder 5 Misfire 3) P0171 Syste...