Odyessy wiring problems
 

I have a 2007 Odyessy. I just recently replaced the ac system which meant removing the dash. Now I have a check engine light showing codes for both oxygen sensor heater circuits and evap canaster low voltage plus gear indicator on gage clustor doesnt show which gear it is in. Are there any wires or circuits that are common to these systems. I really need to know where to start looking, any help would be greatly appreciated. Thank you!

can anyone help at least with the shifter indicator?