code P0700 Trans Control System on 2000 Dodge Grand Caravan

What does this diagnostic code mean so we can repair problem with transmission, fluid full, engine light on, trans not shifting from high gear.

Asked by for the 2000 Dodge Grand Caravan
This code normally points to a faulty transmission control module, but this is an expensive part and you should have an experienced Dodge technician diagnose the problem first.
3 answers 1 comment
P0700-INTERNAL TRANS CONTROLLER
When Monitored: Continuously with key on.
Set Condition: Watchdog test 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 .5 secs. A Dealership should diagnose this condition to determine the Good trip counter. If the number is greater than 3, then further diagnosis by a qualified technician may be necessary.
POSSIBLE CAUSES CHECKING SYMPTOMS AND POSSIBLE CAUSES: LOW BATTERY VOLTAGE CAUSING SYMPTOM, INTERMITTENT CODE P0700. GLOBAL GOOD TRIP COUNTER LESS THAN 3 Starts. SETTING DIAGNOSTIC TROUBLE CODE 0700. With the DRBIII or Scan tool, read DTC’s. If the Starts Since Set Counter 3 or less. Replace TCM.

2 Record all DTC’s and one trip failures. With the DRBIII or Scan tool, erase DTC’s. Turn the Ignition From Off to On. If no Limp-in occurs, start the Engine. Did the erased DTC come back ? Replace TCM.
What happens if not repaired right away? I am broke. And not sure how much something like this would cost
did you resoved the problem? I do have the code in my car. The 2nd or 3rd shift drop and engine rpm go high.