Check Transmission Fluid and fill to mark on dipstick.
If this doesn't help, expect to replace the transmission.
There are many reasons why your reverse gears stopped working. There could be a leak or a plug for example.
I had my 00 eclipse gt automatic do this. took it to mr transmition and they cleared codes that popped up and it stopped. if i drove forward for a while and warmed the car up, then reverse would work. hope this helps.
Hard to say, start with the basics-is the fluid full?
a bad idle sensor control valve to start with or your egr valve has a vaccum leak
maybe the engine fell out
If you are stopped, it is the person whose car backed into you, although this could be up for debate, so hopefully there will be witnesses if not it is a matter for the insurances for a no-fault decision.
Usually by An automatic brake system controlled by computers.
gghf
Customer had a similar problem with a 99 Windstar. Stopped pulling while driving it. Had it towed to me and I replaced the torque convertor. Problem fixed.
13bn771g729 shuts off when put in reverse
IF it is a rear wheel drive vehicle it mabe something wrong with the gears in your final drive...
Its probably the actual transmission itself. It happened to my moms 99 Kia sephia and then it just started working for a few months than the tranny just stopped working all together so I would suggest getting it checked out