Found this and found it had great info on code PO715 I'm in the hope I just didn't get the wire harness snapped on tight in the engine swap... but has great info which is better than just swapping out parts and hoping...
http://www.moranbahweather.com/toyota/100series/lc_70_fzj10/rm/rm616e/m_di_0032.pdf
http://www.moranbahweather.com/toyota/100series/lc_70_fzj10/rm/rm616e/m_di_0032.pdf