I'm having the same problem as this thread
http://www.automotiveforums.com/vbulletin/showthread.php?p=3714904
I have the same exact problem with my 2002 trooper 68000 miles with code P1125 I actually first got the code 10,000 miles ago but it only happened twice and then stopped happing but it recently did it three times with in 3000 miles so I figure it time i do something about it. Going by this form it seems to be my tps which is great since it seems I can put a new one in myself and i don't have to deal with a dealership and my rip-off 200 deductible for warranty service. But I have one problem i don't know where the tps is located, what is looks like or how to switch it. and to complicate things the dealer told me I have two one at the pedal and one in the throttle housing.
Is there any one that can point in the right direction or tell where i can purchase a repair manual for an 02 trooper all the parts stores around here only sell the manuals for pre 98 troopers. Thanks