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The mechanic said I need to buy a new TCM bcoz of the error code p0700,how true? on 2010 Ford Focus

There are other codes like p0071,p003a,p2263,p0071.

Asked by for the 2010 Ford Focus
With the limited info you have I cannot say one way or the other. It appears some of those codes do relate to a electronic transmission controls faults but without deeper diagnosis no way to tell. A tech needs to do more than pull codes to compleat a diagnosis.
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With the limited info you have I cannot say one way or the other. It appears some of those codes do relate to a electronic transmission controls faults but without deeper diagnosis no way to tell. A tech needs to do more than pull codes to compleat a diagnosis.
poss under warrranty with the dealer,call them 1st