Does my 2006 dodge dakota 4.7 have a TCM

 

Yes, but it is integrated into the PCM.

 

ok thats what i was wondering i have just replaced the trans, radiator, and water pump and my trans is still going into limp mode so that is the only other thing i can think of

 

Throwing any codes?

 

Old thread I see but I am here looking for any help on this situation before I dig into my friends truck to help him with this same problem. Its a 2006 Dakota 4.7, 2 wd extended cab. Truck looks like it just rolled off the showroom floor but it does have 160,000 miles on it. One day the truck went to limp mode, next day it was fine. Its happened to him several times now. The truck is throwing a bunch of codes but runs and drives fine most of the time.
Enhanced Powertrain CodesP1603 PCM Internal Dual-Port RAM Communication FailureP0700 Transmission Control System (MIL Request)U0101 Lost Communication with TCM

Anti-Lock Brake codesC2202 Original VIN Mismatch/MissingC2206 Vehicle Configuration MismatchU0100 Lost Communication With ECM / PCM A

Front Control Module CodesU0101 Lost Communication with TCMU0100 Lost Communication With ECM / PCM A

Occupant restraint controller codesU1415 Implausible/Missing Vehicle Configuration DataU1414 Implausible/Missing ECU Network Configuration DataB1b06 Driver Airbag Squib 2 Circuit OpenB1b02 Driver Airbag Squib 1 Circuit Open

Transmission Control Module CodesP1684 Battery Was DisconnectedP0218 Transmission Over-Temperature ConditionP0714 Transmission Fluid Temperature Sensor Circuit IntermittentP0869 Transmission Fluid Pressure HighP0882 TCM Power Input Signal Low
Any help would be great! Thank you

 

Check all the connectors first I replaced tipm, trans, front control module, control module, rad, water pump, and battery I still have the same issue the only thing I havent replaced is the wiring harness I don't know if your is the same issue but I spent a lot of money that I didnt need to trying to track this issue down and I'm still having this issue

 

Ive chatted with a few friends that work for dealerships and also some that own shops, they all say to steer away from the job because it will eat my lunch. I like a good challenge but this almost seems like a guessing game at this point. Ill check the connections and clean them with air, make sure the battery is charged and cables are clean and tight. Not sure where to turn if the problem persists.

 

Tech at local shop said he found a frayed wire and a broken wire- not entirely sure that's correct as I found he used wire ties to secure the 4 harness inputs to the pcm and that might have been the issue- loose clips. Meanwhile it the three only 1 code p0988- that caused me to replace the trans pressure sensor, and now have P0934 which points back to more wire harness issue from that sensor to tcm. Still working on that do good luck to us both but at least the litany of codes/communication errors is gone