2001 Dodge Caravan In Limp mode. Code P0605 and P0700?

S

Sunny

New member
Well, we were on our way home and pulled out of a rest area and were stuck in second gear. Engine light on. Holding up traffic for miles on a Sunday afternoon...

Brought it home and to the muffler shop and tried to erase the code. It came up with codes P0605 and P0700. We didn't think that the engine computer we used would work on it, but that's what it said. I believe the tester is a lower end model than the repair shops have.

Does this mean I need a TCM? Is that what we should replace first? Or should I bring it to the mechanic's shop and get them to test it with their computer to make sure and go from there? I just don't want to pay a bunch of money if we can just replace the TCM ourselves...

Thanks so much for your help!
 
you do need to take it in to another shop before you buy a tcm unit for it because sometimes that can be more than a tcm unit causing that too happen,don't start buying parts based on theory's,that can get really expensive,see what the better tester does and then go by that,if it does turn out to be the tcm you can easily replace it your self,there's no programming involved or anything like that,but be sure,your vehicle has the same symptoms of a bad tcm but be sure,because once you buy it and install it, its yours for life,good luck
 
Had the same problem with a 1999 Dodge Intrepid. It is the transmission control module inside the transmission. It cost me $325 to get it fixed at the transmission shop. that was including the part.
 
Well the first code P0605= an internal memory error so that lead me to think the TCM is acting up or confused and bec its acting up etc it stopped working creating the other code P0700.

To me it sure sounds like the internal memory failed or it has a glinge in it , or it got confused or over loaded, or it could mean you need a factory 60 buck or so program or flash update done it.It could also mean the TCM has internally over heated or caused a memory problem so I'd try resetting it via disconnecting the battery for a few mins then see how it acts.If it shortly again shows engine light on or shortly after wards then I'd suggest changing the TCM.

Be careful when dealing with with such issues bec many misdiagnoses are made daily especially when dealing with mechanical and electronically controlled transmissions.

Hope that helps and best of luck.By the way I'd read my owners manual on disconnecting or changing battery's bec if you've a radio or ignition security system you'll need the codes handy too.

You could check around for a good used TCM and U pick yards aren't too bad bec you get to select and remove the parts yourself , plus you can get one from 50 to 100 bucks or so.Just remember that the TCM needs to come from a vehicle just like yours same transmission , engine etc but there might be different years or models that use the same TCM , just ask the auto wreckers they'll tell you whats what.

I believe on those the TCM is either mounted to the passengers side firewall or upfront by the windshield passengers side just be sure you disconnect the battery before ever replacing any comps.
 
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