P0700 code?

Some codes are intermittent and it could be due to a loose connection somewhere and might not come back immediately after the code is erased. If the problem had not been resolved, it would come back later.

That code is telling you the PCM that it cannot see which gear you have selected. I would start with the gear range selector switch.

Here is are some diagrams and guides to confirm the failure.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

and

https://www.2carpros.com/articles/how-a-neutral-safety-switch-works

Please let us know what happens so it will help others.

Cheers, Ken

The codes you supplied us with
p1684 is that the battery was disconnected (no problem )
p0601 is that the PCM failed self check (problem will get back to it later)
p0700 is that the TCM has in it a troubled codes and need to check for it and the way you can do so is by using a scanned tool as an OBDII reader will not get you the tcm codes

my suspicion in this mater would be tranny solenoid pack, need codes to conform
but if its easier for you to get and replace part then checking for codes
I would go for replacing the solenoid pack

A green wire? How did you arrive at that? The place to start is by reading and recording the diagnostic fault codes. Chrysler makes reading codes yourself real easy but those are just codes in the Engine Computer. Code 700 just means there are fault codes in the Transmission Computer. Simple code readers used by most auto parts stores won't access anything other than Engine Computers. You'll need to use a scanner to access the Transmission Computer, and that usually means visiting a mechanic.

You'll want to replace the spark plug wires. Soaking them in oil leads to deterioration and misfires.

Was the code erased and then came back?

That is just a generic Powertrain code to alert you that there is a transmission issue. Now you need a transmission shop to use a professional scan tool to read the more specific codes that are stored in the TCM

Could be the torque converter itself, have it further checked-

SYMPTOM
P0740-TORQUE CONVERTER CLUTCH CONTROL CIRCUIT

WHEN MONITORED
During Electronically Modulated Converter Clutch (EMCC) Operation.

SET CONDITION
Transmission must be in EMCC, with input speed greater than 1750 RPM. TCC/L-R Solenoid achieves the maximum duty cycle and can not pull engine RPM within 60 RPM of input speed. Or the Transmissions is in FEMCC and engine slips, TCC greater than 100 RPM for 10 seconds.

POSSIBLE CAUSES

RELATED DTC'S PRESENT
INTERNAL TRANSMISSION
INTERMITTENT WIRING AND CONNECTORS

Good afternoon.

Is there another code besides the 700? That is just an indication of a general transmission failure.

How long since you changed the oil/filter in the transmission?

Roy

Symptom:
P0700-internal trans controller

Possible causes:
Checking symptoms and possible causes low
Battery voltage causing symptom
Intermittent code p0700
P0700 global good trip counter less than 3
Setting diagnostic trouble code p0700

PART 1

Test 198 Through 201
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Test 202
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WHEN MONITORED:
After a reset (ignition key turned to the RUN position or after cranking engine), and every 60 seconds thereafter. Also after an internal (TCM) invalid delay check.

SET CONDITION:
The watchdog fault line remains high after the period has elapsed for the too early/too late watchdog test, or the transmission relay remains on after the watchdog expires. Transmission in LIMP-IN and MIL on after 10 secs of vehicle operation.

PART 2

Test 203 Through 206
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Test 207
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WHEN MONITORED:
Continuously with key on.

SET CONDITION
Watchdog tests not in progress. The code sets if the delay/monitor line is low too long and/or the switched battery is low for more than 0.5 secs.

P0700. Transmission Control System (MIL Request) try having the vehicle speed sensor.

Suspect wiring
check wiring harness between input, output sensors and the TCM
check for a open or a short wire

Possible Causes
OUTPUT SPEED SENSOR SIGNAL CIRCUIT OPEN SPEED SENSOR GROUND CIRCUIT OPEN OUTPUT SPEED SENSOR SIGNAL CIRCUIT SHORT TO GROUND OUTPUT SPEED SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE SPEED SENSOR GROUND CIRCUIT SHORT TO VOLTAGE OUTPUT SPEED SENSOR POWERTRAIN CONTROL MODULE INTERMITTENT WIRING AND CONNECTORS

NOTE: Low fluid level can be the cause of many transmission problems. If the fluid level is low locate and repair the leak then check and adjust the fluid level per the Service Information
Start the engine in park. Raise the drive wheels off of the ground.
WARNING: PROPERLY SUPPORT THE VEHICLE.

Firmly apply the brakes and place the transmission selector in drive.
WARNING: BE SURE TO KEEP HANDS AND FEET CLEAR OFF ROTATING WHEELS.

Release the brakes and allow the drive wheels to spin freely.
NOTE: The drive wheels must be turning at this point.
3

With the DRBIII Â, read the Output RPM Is the Output RPM below 100?