Will Not Shift 2-1 In "1" Position
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: misadjusted or damaged PNP switch or control linkage. Faulty revolution sensor or VSS signal. Damaged valve body assembly, shift solenoid valve "A", overrun clutch, or low and reverse brake.