well someone please tell me how to do the codin and everything. i have 97 dodge neon and it has a new head gasket cuz the other one overheaded and my oil light is on and the oil in the car is fine its full as can be and i don't know why its on for. and then my check engine light is on and i know that is cuz i need new o2 sensors but can someone help me plz

 

https://dodgeforum.com/m_63384/tm.htm