This could mean that your shiftier linkage has bent somehow. You need to replace the linkage as bending it back will only result in having a weakened part. If may also mean that your fluid level is low in the transmission and it won't shift into a specific gear. Add fluid as necessary.
if the generated emf in motor is greater than supply voltage means the drive will goes to reverse
Get new transmission
For an automatic transmission, check the side of the transmission by or at where the shifter linkage goes into the trans. For a manual transmission, check under the shifter boot.
Type of vehicle and is it a standard or automatic? Could be shifter linkage, clutch, something stuck around the shifter. If standard, will it shift into reverse when the engine is off? If so, it is most likely the clutch slave cylinder. Could be the master cylinder, but the slave usually goes bad first.
discovery only foward drive in revese
If your Pontiac runs a 700r4 gm transmission you have stripped a reverse input shell. The transmission needs to come out for repair.
your transmission is about to go, usually reverse goes first
It means the reverse clutch pack has gone out in your transmission and needs to be rebuilt or replaced.
There could be a number of reasons why the automatic stick will not go into gear on a 2006 Ford Taurus.A few of the things could be a bad shifter, low transmission fluid, or even a bad tranny.
It will wait as long as you have it in "park." Put the baby in Drive or Reverse and off she goes!
When the shifter goes to the reverse position a switch is depressed to turn on the back up lights. The switch is most likely on the top of the transmission.
There is a switch called the reverse backup light switch attached to the shifter. When you move the shifter into reverse, the switch is closed and current goes back to the reverse lights. The switch is located on both auto and manual trans. After making sure your bulbs are good, that is where I would look. And make sure your fuses are not blown as well in your fuse block. There usually is not just a circuit dedicated to reverse lights only but there is always something a manufacturer will do some years just to be different.