great find. i love my limited! i have 157k on mine. no issues. i do 7500 miles on the oil changes. stock oil recommendation. jsut treat her well and she will treat you well
yes it is the swirl valve actuator and that is underthe intake manifold. the swirl valves clog with soot from the EGR and then break so the actuator cant control the valves and you get a code. the intake manifold needs to be replaced.