No Reverse
1. Low hydraulic pressure.
2. Low-reverse band adjustment.
3. Defective or leaking valve body.
4. Low-reverse servo, band or linkage malfunction.
5. Incorrect gearshift linkage adjustment.
6. Worn or damaged reaction shaft support seal rings.
7. Worn or faulty front clutch.
8. Worn or faulty rear clutch.
9. Planetary gear sets damaged or seized.
10. Rear clutch dragging.
11. Faulty cooling system.
12. High hydraulic pressure.
13. Faulty oil pump.