I keep getting same codes after replacing MAF and FPR. Original symptoms were rough idol at stop lights in city after running car for a while and rough start. Cleaned throttle body. Seemed to run better at stop lights. Still rough start. Volvo specialist changed fuel pressure sensor. Drove about 20 miles and check engine light comes on with same codes. I've changed spark plugs, fuel filter too. Just cant seem to figure this one out. Could it be PVC? Wiring? I'm at the end of my rope!! Anyone ever had this issue?

 

can you post which codes you are seeing?

 

P0101 and PO190