New 4.6is and got a P0741 code

[smokeyyank]

Howdy all,

Past week I pulled the trigger on a 03 4.6is, the car was in AZ and I had it shipped up to Denver. I personally didn't look at the car but Danny (who is on here) was gracious enough to take a peek at it for me and it checked out at the time. I took it out for a maiden voyage the other day when about 20 miles in I got the SES light. Driving wise no issue other than a slight harsh downshift from 2-1. I have not tried driving at 65 and letting off the gas to see if RPM's stay or drop yet (just read that today and didn't drive the X). I did notice RPMS were about 2600ish at 65 though no feeling of slipping. I went to O'rileys and used the scanner to reveal a P0741.

One thing that came to mind is my battery is pretty much gone, really rough starts have been the theme for it. Doesn't need a jump but it does not like to start right away. No battery light, but I know that's not how cars should start. I got a new battery I'm going to try and install and see what that may do. I know that these cars hate low voltage and I'm hoping that may be the issue. Another thought is this is a AZ/CA car never been in cold and when I drove it the other day it was a balmy 30 degrees. I was reading about the software update that pertained to harsh downshifts and cold temp. Not sure if this ever had the update or not. Have also read that the Dinan tranny upgrade solved peoples problems. I really hope I'm not going to have to replace a TC right off the bat so wanted to get some thoughts from the experts on here of ideas for what to do.