No 1-2 Or 2-1 Shift (Warm Or Cold)

Kickdown switch faulty (kickdown shifts). Transmission electronics faulty. Defective solenoid valve No. 1. Control valve 1-2 or 3-4 seized. Shift valve 1-2 seized. Defective brake "C1" and/or "C". Defective clutch "C" faulty.