Having the exact same symptoms with my rx300... had spark plugs and wires replaced, new fuel filter and new serpentine belts... p300 p302 p304 p306 p1354 and p1153.... So do i need the left ocv or the right ocv with those codes? and does anyone have the actual part number for the ocv's and the af sensors bank 2 sensor 1... thanks so much for your time! Tracy in Knoxville, TN