trouble codes
 

hello again all,
I replaced the heads on my 2002 ranger xlt 3.0, engine fired right up, which surprised me, ran good for a while, then check engine light came on, check engine light came on also, gave me codes p1132, p1152,p0136, p2270, p0172, p0175, i'm getting ready to test the upstream 0/2 sensors, is this the problem? or is something else causing it? any help would be appreciated. thanks