No Reverse Gears
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2002 Lincoln Navigator, 2002 Ford Expedition, 2001 Lincoln Navigator, 2001 Ford RV Cutaway, and 2001 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
Fluid level, shift linkage or cable, low line pressure, pump inlet filter and seal assembly, manual valve (stuck or damaged), valve body leakage (gasket damage), improperly torqued valve body bolts, reinforcing plate bolts improperly torqued or loose, direct clutch assembly (only if 3rd gear is also inoperative), reverse clutch assembly, reverse planet assembly and reverse ring gear.