Holley Mile Dial system on Ebay

From : robert e watts

Q: how do i reset the check engine light on my 2001 durango i think the gas cap was left loose again this happened once before and a shop charged $50 to check for codes and reset the light. can i just disconnect the battery also any suggestions for a scan tool since the miles are adding up on this car and will probably be needing one sooner or later tia mark l .