98 4L 4X4 Ranger nead info about timing

i have a 99 ranger, 4l 4x4 with an over head valve engine, i keep getting a code [p1000]. can anyone tell me what that is for... the truck bogs out and backfires when i rev it up... now it seems it's jumped it's timing, i've been told it has electronic timing. can anyone help me out... please