Got the same code last week. 2007 4.0 104,XXX. Dealership did a "Oil control valve active linear test", found that it was functioning correctly, and the CEL was initiated erroneously by low voltage. I was on my Original battery, so they replaced it.
I went from the daystar to the 5100's when my stock shock started leaking. on road, i've not noticed to much difference in ride between the two. BOTH are stiffer than stock SR5 suspension, in a good way. I paired the 5100's with 5th gen coils. I'd go with the 5100's, if you have >100k on your...