No 1-2 Shift In "D" Position

Shift linkage, Transmission Range (TR) sensor, intermediate clutch pressure, line pressure, valve body (1-2 shift valve, 1-2 accumulator valve), Shift Solenoid No. 1 (SSA) failure, damaged No. 8 check ball, incorrectly tightened valve body bolts, pump assembly, intermediate clutch assembly, intermediate one-way clutch assembly or low one-way clutch assembly.