2003 v70 2.4 ltr none turbo limp mode

[lexmark]

hello

I have 1 2003 v70 2.4 ltr none turbo engine ,had po171 code ,disconnected battery ,replaced breather box , flame tray box , oil trap with the kit from geniune volvo parts now connected battery to test and goes into ( limp mode ) no codes . any suggestions car ran great before battery disconnected only fault was code po171 , now no power, no codes .

thanks for your help