Put trans in works great but has a code po 0700

unknown vehicle and no information generic answer https://www.fixdapp.com/blog/p0700 https://www.obd-codes.com/p0777 most likely your 0777 code is also causing the 0700 the two links show problems and ways of repairing the causes if left to long trans replacement - rebuild maybe only choice but try flush - fluid - filter -change

P0700 OBD II Trouble Code Transmission Control System Malfunction...
P0740 Dodge Torque Converter Clutch Circuit
P0430 Dodge Catalyst Efficiency Bank 2

code p 0700 refers to transmission control module(TCM)--malfunction===causes ---wiring---TCM
check for loose / corroded wiring connections and or/ replace thet TCM

the codes are trans codes and the trans will have to be inspected and tested to fix. it may be more than you can handle if so take it to a reputable trans shop.

You didn't even provide a vehicle or anything else
So go to Google & put in ---OBD POxxx
The code you got OBD PO 755 or whatever
It will be inside the trans pan or side cover on the
valve body
Don't use the vehicle until resolved or you will end up
with a complete rebuild of the trans & a bill for 4 grand

No one can or should be telling you to replace
anything on any vehicle

Only knowledgeable people with proper reference material,
should even work on a car

Have it properly diagnosed

Ask around before you go to just any shop,
assuming you don't have one you used for
decades

That is a transmission code-- so stop using it

Any time you get any trans issues,all you need is a few
miles & you can ruin the trans in a heart beat

P0700 Information Code The Transaxle Control Module (TCM) monitors the malfunction of sensors and actuators relating to transaxle control. You will need to have your TCM code scanned to figure out what the problem is. Most likely it's a bad solenoid in the transmission. Most automotive shops have the TCM scanner.

I’m happy to help further over the phone at https://www.6ya.com/expert/jeremy_69f3cc28d95bf514

po 443= purge solenoid circuit
po 730= incorrect gear ratio, transmission problem
po 751= 1/2 solenoid problem
po 756= 2/3 solenoid problem
other 2 have no listing on alldata
you should seek professional help with these trans codes.
check ALL fuses first

P0700 is a pcm trouble code that basicly says there is more trouble codes in the trans controller side of the pcm.
in order to find out what those codes are you will need a scan tool and then once you have the codes further diagnosis can be done.
depending on what codes come out of the trans controller it could mean something simple like a bad speed sensor or some kinda bad like a loss of prime. gear ratio error codes can be caused by faulty sensors.


Best advice take it to either a dealer you trust or a tranny shop you can trust. if your not comfortable driving it get it towed.

P0700 - Transmission Control System Malfunction, this is a transmission or PCM issue and needs further diagnosis with other test gear.

The P1684 code simply means that the battery has been disconneted within the last 50 engine starts.