I'm coming up with codes Po700, Po732, Po605, Po720 when I run a diagnostic on my Dodge Grand Caravan Sport, 3.3, 6cyl. Could the TCM (Transmission Control Module)be bad or it just need re-flashing?

basic mechanic knowledge will not get this fixed. go to a tranny shop let them know what the codes are they will be able to fix it faster and correctly without further problems.

More often then not, the cause of this code is that there is a transmission problem of some kind. The TCM detected the problem and set a code. P0700 means that a fault code is stored in the TCM. However this doesn't rule out the possibility of a failed PCM or TCM (unlikely). it will require a scan tool that communicates with the TCM to find what actually set the code as this code just tells you there is a problem somewhere with the transmission.

that is the transmission control module is not reading. did you replace it. it is in the front of the transmission

The first number is a zero not an "O" P0700 is just the TCM requesting the PCM to turn on the check engine light. Because of these codes are defective transmission wiring harness, defective shift solenoids, defective transmission internal parts.

Dear Oti,

Replace The TCM. This Code Comes Up When Transmission Gets Stuck In A Gear.
Hope This Helps.
Alex :o)

The P0605 is an internal failure in the transmission controller. This code sets when the tcm fails one of its internal self tests, and i think the only repair is to replace the module. P0700 is transmission control system malfunction

CODE P1775 - A / T OR AUTOMATIC TRANSMISSION SWITCH LATCHED IN TCC POSITION. CODE PO732 - A / T ADDITIONAL GEAR RATIO ERROR IN SECOND GEAR. CODE PO700 - AUTOMATIC TRANSMISSION CONTROL SYSTEM MALFUNCTION CODE PO456 - EVAP SYSTEM SMALL LEAK DETECTED.POSSIBLE CAUSE FUEL TANK CAP LOOSE OR DAMAGED , SMALL LEAK PRESENT SOMEWHERE IN EVAP SYSTEM. I DID NOT SEE CODE P1788. BUT CODES P1775, P0732 , PO700 , YOU HAVE INTERNAL TRANSMISSION PROBLEMS TRANSMISSION SHOP HAS TO HOOK DIAGNOSTIC EQUIPMENT TO CHECK TRANSMISSION PRESSURE SOLENOIDS AND SHIFT SOLENOIDS. TRANSMISSION VALVE BODY HAS MANY SOLENOIDS PRESSURE SWITCH AND SENSORS COST TOO MUCH REPLACE THEM ALL LET GARAGE SCANNED TRANSMISSION BE MUCH CHEAPER.

Try cleaning the throttle body. Does it do it more when it is warm outside?

The electronic shift solenoids are serviced as an assembly that is quite easy to replace. Your fault codes are all related to shift solenoid faults.

p0700 is a generic trans. code, so the problem if it is in the trans. would require further trans diag. so i would scan trans specific codes first. but in most cases when a chrysler tells you it is an internal controller fault you can believe it. just make sure which controller it is telling you has a fault!