2004 Cr-v Wont Go Over 45mph Cel Is On

HI MY SISTER HAS A 2004 CR-V WONT GO OVER 45MPH CHECK ENGINE LIGHT COMES ON IT WAS AT BODY SHOP FOR A MONTH A TREE BRANCH FELL ON IT IT RAN FINE BEFORE IT WENT TO BODY SHOP BODY SHOP SAID THEY RESET COMPUTER I DONT KNOW IF RESETTING COMPUTER CAUSE THIS PROMBLEM:banghead: :shakehead :confused: :1zhelp: :newburn: :mad: