Chrysler Repair: DTC Code 45, chrysler sebring lxi, 1997 chrysler sebring lxi

Question
Roland
I changed the ECT sensor as suggested, no improvement.  It still acts like its missing at
operating temps and occasionally shuts down in lower RPMS.  Something new also has developed.  My transmission would not shift to higher gears and I have a code 45.  My fluid is fine.  It seems I cannot get this car where it needs to be.  Suggestions Please.
1997 Chrysler Sebring LXI Coupe, 2.5 Liter EFI.  Your thoughts are appreciated.
Ricky  

Answer
Hi Ricky,
If you could reference me to your original question (date and approximate summary phrase) that would help me as I would otherwise have to search thru all the previous questions one at a time to find all the particulars. I will give the driveability question some further thoughts and get back to you on that.
The code 45 means that the electronic controller for the transmission has picked up a fault code. Unfortunately it doesn't have a self read-capability. But here is my standart response"
It sounds like your electronically controlled transaxle has detected some problem with the unit and in order to avoid any unnecessary damage has gone into "limp-in" mode which means it won't shift out of 2nd gear. It allows the car to be driven at moderate speed to a garage for analysis. The transmission controller logs the problem as a two digit number stored in its memory. The transmission controller does not have a self-read capability as does the engine controller so you can't use the ignition switch to get the codes.
The dealer or a competent transmission shop should have a readout unit to find out what the code number is and from that they can make some conclusions about whether the trans can be repaired without being removed from the car (for example a electrical or hydrualic pressure problem) OR if some mechanical damage is involved (but follow-up a "mechanical damage" diagnosis by dropping the oil pans and looking for debris to be present or not) which if true would require a pretty expensive rebuild, I am sorry to say. No debris in the pans would suggest the possibility of an hydraulic problem only.
So that is my best advice, go to a dealer/independent and ask for a diagnostic readout of the transmission controller and an estimate for repairs. Get the code number(s), and if you like, write back with a 'follow-up' question to me and we can compare what you are told with what the shop manual says is the problem of that code, and then decide if you are getting the correct advice. You don't have to give them a blank check, just ask for a diagnostic readout, the code numbers and the repair estimate. It will cost something to get that done (should be under $100), but the more information you have before going forward the better. I would not go to a franchise-type (AAMCO) transmission shop, but rather an independent with a good reputation or a Chrysler dealer. The place has to have a code reader with the adapter plug that mates with the Chrysler-type transmission readout plug. So inquire whether that is true, if you don't go to a dealer shop. If you go ahead with the repair, the cost of the diagnosis is often credited against the repair cost. But don't rush to judgement because a total rebuild costs about $1,500 so you don't want to authorize that unless it is the only possibility.
Roland