Will Not Shift 3-2, 4-2, 2-1 Or 3-1
WARNING: This page is about a different car, the 2002 Infiniti QX4, 2001 Nissan Pathfinder, and 2001 Infiniti QX4. However, it is still accessible from the selected car via links, so may be relevant.
Possible cause: incorrect fluid level, misadjusted TP sensor, or damaged shift solenoid valve "A" or "B", valve body assembly, high clutch, low one-way clutch or brake band.