Chrysler Repair: Battery and check engine lights are on; code 44, powertrain control module, chrysler dealer

Question
Yesterday I changed my oil, transmission fluid/filter, and I flushed out my radiator. Well now my service engine soon light is on along w/ my battery and a code 44. I searched and it says it either means battery voltage too high/low. Do you have any suggestions why this would pop up right after I performed all of these functions? Another question I wanted to ask is whether it is ok to use ATF +4 valvoline synthetic fluid bc that is the only thing I could find to fill my pan up with. It seems as if my tranny is a little bit rougher but I don't know if I am just listening too hard or not :)

Answer
Hi Colt,
The ATF +4 is probably ok, because it isn't Dexron. So see how it goes or check with a Chrysler dealer to see what they are using in your type of vehicle.
The 44 code may be a temporary fluke. I would disconnect the battery for a few minutes to erase it and see if it comes back. All I can read about it says the battery temp sensor is part of the powertrain control module and if it persists about the only correction is to replace the PCM. It is a device that measures the temp under hood (which reflects the battery temperature); it sets the charging goal based on that measurement. If the measurement doesn't make sense then the code is set. I can't explain why it should relate to the servicing you did. So erase it and see what happens. The battery light coming on means that the belt is either slipping on the alternator or there is something going wrong with its output. So check the belt tension, and see what the headlight intensity appears to be. If it seems to be below normal brightness you might want to consider getting the alternator checked at an Autozone or similar parts store. If you have a voltmeter see what the voltage is at the battery after you warm up the engine and have it idling. It should be above 13.5V in most cases.

Roland