I have a lift pump acting up and replacing it Wed. On the way to this morning my check engine light came on and I got an 0237 on the code reader. I read the check list on the error code page, so my question is can the map sensor just go out causing the code or is there any correlation between a bad lift pump and a map error?

No there is no correlation between a bad lift pump and a map failure... You run through the diagnostic... http://articles.mopar1973man.com/index.php?option=com_content&view=article&id=167:p0237-map-sensor-voltage-too-low&catid=59&Itemid=107