steve whitney , I,ll need to know your engine size , as This year Stratus could have one of three differnt Transmissions in them.
Thank You I,ll be waiting for your reply
Your Transmission is an F4A51 , This is an uncommon problem with them but as long as you have no C/k Engine or C/k Trans. light on The most common failure is the Low /Reverse Solonoid has failed This solonoid controls Pressure for Low, ( Man1)
Range and also Reverse This can be replaced in the Vehicle by a Reputiable Transmission Mechanic,
The other Failure their known for is the end cover Cracking internally but if this was the case you would also have a problem with 3rd gear.