Hello I have a newholland Tm 165 fault code f2b active.

code p 0882 refers to transmission control module (TCM)--power input signal low ====causes--wiring--short to ground ---TCM
make sure that you haven't damaged any wires when you were replacing the sensors
check connections
replace the TCM

code p 0740 refers to torque converter clutch (TCC) solenoid ---circuit malfunction=== causes ---wiring---TCC solenoid--ECM---TCM ( transmission control module)
check the wiring and connections for clean / tight connections have the TCM tested or replaced
take it to an accredited auto transmission specialist shop to check the solenoid operation and test of the TCM or for a proper diagnosis of the problem

code p 1625 refers to CAN databus, TCM--incorrect signal===causes --TCM trouble code/s stored---TCM incorrectly coded---wiring---matching resistor in ECM
I don't have a listing for code p 1749 but codes 1748 and 1750 are concerned with TCM defective and voltage supply low
so after you check the wiring and connections form the transmission you have 2 options
use a known good ECM to replace yours ( will eliminate any ECM faults)
and/or replace the TCM module on the transmission

run the fault codes and look for a problem servo/ solenoid for the over drive
check TCM for operation

code p0700 refers to transmission control system/ MIL- malfunction===causes--wiring ---TCM replace the TCM
code p0750 refers to shift solenoid9SS) A-circuit malfunction===causes --wiring---shift solenoid ECM/TCM. When the TCM is replaced then it should be fixed as the TCM is common in both faults.

code p 0864 refers to transmission control module(TCM) communication circuit --range / performance problem===causes --wiring---poor connections ---TCM
always check the wiring and connections first then replace the TCM

Hello dave, to answer your question correctly i would need to have a complete diagnostic read out in real time. All these faults could be due to many things, from faulty parts to defective TCM. It could also be wiring problems or a combo of any or all. I suggest you get your transmission diagnosed from a couple of reputable transmission shops. With the correct diagnostic equipment, an accurate repair estimate can be quoted. I hope this helps.

2001 grand cherokee?
nor years of all parts swapped.
swaps are super complex topics, endless possibles.

dont expect magic from any TCM.
they cant tell you ever possible way things can be wrong
it will fail to shift right if things are wrong,
the trans TCM can go to limphome mode, read the service manual chapter 21 yet its free, posted here 300 times.
forget the silly engine , light (CEL) use only a scan tool one that can read all factory codes not some $20 tool.
CEL lamp is for failing smog. only. never trust it, if out.

i say bad shift solinoids.
the TCM can see late shift error.s but maybe not all.
stick in 1st is a hard failure.
all inputs to the TCM must be correct for the shift to 2nd happens.
check all inputs.
if those are then see if the TCM did shift to 2nd, but the solenoids ignored the logic inputs to the solenoids.
solenoids have many failure mods
dead. (stuck closed)
stuck open, valve open.
or leaking. (leaking can cause stuck in 1st and confuse any TCM)

leaking means breached, valve leaks where it must not. ever.

Trouble code identification:
VAG type 5-digit fault code 18034 = EOBD type P1626 fault code:
Fault location = CAN data bus, TCM - no signal
Probable cause = TCM trouble code(s) stored, TCM incorrectly coded, wiring, matching resistor in ECM.

TCC PWM solenoid circuit. Chech the wiring and connectors around the transmission, there are some tsb's pertaining wiring issues.