PO748 diagnosed along with PO700, does this mean need a new transmission

It means there is at least one transmission code set in the TCM's memory. P0700 is an informational code only. More diagnosis is necessary to identify what the transmission fault is. This requires a scan tool that will communicate with the transmission module
http://www.obd-codes.com/p0700

Type in odb2 po700 in google and it will pull up your answer. The other 2 codes im unformiliar with. May mean you need to update your obd2 code reader software or those are transmission codes. Go to auto zone or orielies

lets start with po562, this is a transmission code with low voltage reading at trans solenoids, for this code test your battery and alternator,
the next code po700, this code is to tell you that there is a transmission code stored in the transmission module, which could be the po700. but sccanning the trans module may be a good idea to check for other codes, i assume at this point you are having transmission problems? as far as these codes i would check all fuses and connectors going to transaxle(transmission). you may have internal problems, as we know these chrysler transmissions are junk but you may have bad connection or bad wire to transaxle controller.
last code po016 this code i would check first, i have worked on a few of these that had po016 which means crank and cam correlation . this means the crank and cam are not aligned meaning worn chain , these 2.7 engine... or cam gear spun. testing this ,you will need to know about car repair or you could damage the engine if it isnt already.

Code 731 is for a problem with the gear ratio for first gear.
Code 700 is a general fault code that means you have a problem with the transmission control module or the transmission.
The 731 code can cause the 700 code, and the problem could be a speed sensor inside the transmission. The computer does not like the signal being sent from the transmission to the computer.

The P0700 means Transmission Control System (MIL Request), and the P0785 means Shift/Timing Solenoid.
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P0700 means a indicative transmission malfunction, allways this code appears with other, in your case, P0740.
The P0740 code pertains to the TCC solinoid in the transmission, and often comes and goes, so it may not reappear for some time... enough for you to get through the inspection before you decide to have the transmission diagnosed. The torque converter is a device mounted between the engine and transmission. This device transfers engine power to the trans. This code may indicate posssible failure to engage.

Hope helps.

Hi there:P0700 means a indicative transmission malfunction, allways this code appears with other, in your case, P0740.
The P0740 code pertains to the TCC solinoid in the transmission, and often comes and goes, so it may not reappear for some time... enough for you to get through the inspection before you decide to have the transmission diagnosed. The torque converter is a device mounted between the engine and transmission. This device transfers engine power to the trans. This code may indicate posssible failure to engage.

Hope this helps.

This is a transmission fault code and has to with the governor pressure solenoid. First thing to check is to make sure you have the proper level of transmission fluid and that it is not dirty. If these check out OK then you need to have a transmission tech look at it.

P0700 means EATX Controller DTC Present. That means that there is an internal fault inside of the transmission control module, so you'll need a new module.

P0700 is EATX code present. It simply means that the engine computer has noticed that the transmission computer has a dtc in it. This causes the Pcm (engine computer) to turn the check engine light on. You will need to have the TCM (trans computer) checked for codes to know what to diagnose.

error code P1776 - Replace rear solenoid switch

Likely both related The P1776 probably kicked off the P0700 notification.

Hope that helps! Happy Motoring!